Showing posts with label ecology. Show all posts
Showing posts with label ecology. Show all posts

Thursday, September 27, 2012

Video of the Week: A Tribute to Rachel Carson and Silent Spring


"Over increasingly large areas of the United States spring now comes unheralded by the return of birds, and the early mornings are strangely silent where once they were filled with the beauty of bird song." 
-- Rachel Carson, Silent Spring 1962 


Fifty years ago this week, Rachel Carson's now-famous book Silent Spring rolled off of the presses. It drew widespread attention to the effects of pesticides like DDT on wildlife and human communities and is often credited with launching the modern environmental movement in the United States. The title laments the loss of songbirds to unintentional poisoning.



As a child growing up on a farm in Western Pennsylvania, Carson learned to love and respect birds and other wildlife. Our video of the week is a tribute to Carson and her enormous impact on public understanding of ecology and environmental toxicology in the United States. The Eastern Towhee shown here is one of many birds Carson likely heard singing on her farm during her formative years.  Thanks in large part to Carson's eye-opening book, broad applications of pesticides have been reduced, and there's hope that we will never experience a truly silent spring.

LEARN MORE
Read a brief biography of Rachel Carson and excerpts from her often lyrical writings

Learn more about the Eastern Towhee (including listening to other audio clips of their songs and calls) as well as many other bird species on the Cornell Lab of Ornithology's All About Birds site

Read the first chapter of Lind Lear's Rachel Carson: Witness for Nature, a detailed biography of Carson's life


Have you read Silent Spring or other writings by Rachel Carson? What did you think?

Monday, June 11, 2012

Beach Reads of the Science Variety

Looking for some titles to add to your summer reading list?
Check out some of the Visionlearning team's favorite books.  
Photo courtesy: Flickr User cmcgough. (CC)
Temperatures are on their way up and the swimming suits are coming out of hiding, which can only mean one thing: summer break. Before you buy the latest "beach lit" paperback to while away those sunny hours or download the entire Twilight saga to your e-reader, consider this humble suggestion: this summer, try a page-turner of the science variety.

Think we're joking? Not hardly.  The stories of science are full of complex and intriguing characters who experience, and are shaped by, all the same things as their fictional counterparts--conflict, mistakes, rivalry, passion, doubt, discovery, and luck, to name a few.  But these stories are even more compelling because they are true.

To get you started, we took a quick survey of the Visionlearning team's favorite (nonfiction) science books. They are a combination of recent releases and trusty classics, spanning the range of disciplines. This is by no means a comprehensive list, and we hope you will help improve it by critiquing our suggestions and offering up favorite titles in the comments section below. Happy reading!

ASTRONOMY
Death by Black Hole and Other Cosmic Quandaries by Neil deGrasse Tyson
This collection of witty essays from well-known astrophysicist and science communicator Neil deGrasse Tyson runs the gamut, exploring what would happen if you actually fell into a black hole, the most egregious astronomy errors on the big screen, and everything in between.

The Day We Found the Universe by Marcia Bartusiak
In a book that is part scientific thriller, part character-driven drama, Marcia Bartusiak describes the exciting early days of modern astronomy in the United States. The characters, some of whom are rarely mentioned in pages of textbooks, show how breakthroughs are often not single moments of brilliance, but a collection of hard work, imagination, rivalry, and luck.


BIOLOGY
The Immortal Life of Henrietta Lacks by Rebecca Skloot
One of science's unsung heroes, Henrietta Lacks was a poor tobacco farmer from Virginia whose cells (taken without her consent) were grown in culture and used throughout decades of medical research on polio, cancer, the effects of radiation exposure, and much more. Yet Lacks died virtually unknown, and her family never received compensation from the multi-billion dollar industry that her cells made possible. Science writer Rebecca Skloot offers a riveting look at Lacks' story and her legacy, weaving together biology, business, ethics, and the ties that bind families together.

Stiff: The Curious Lives of Human Cadavers by Mary Roach
Science writer Mary Roach blends humor, science, and old-fashioned grossology as she explores the fascinating exploits and scientific contributions of human bodies--after they're dead.

The Reluctant Mr. Darwin by David Quammen
As a winner of the John Burroughs Medal, David Quammen is known for his nature writing, but his ability to write about human nature and all our quirks and foibles is equally impressive. This book takes readers back to the 19th century to trace the journey of Charles Darwin--not so much his fabled voyage aboard the HMS Beagle,  but his intellectual and emotional struggle to understand the evidence for natural selection piling up before him.

Evolution's Rainbow by Joan Roughgarden
Evolutionary biologist Joan Roughgarden takes readers on a fascinating tour of sexual diversity among fish, reptiles, amphibians, birds, and mammals, challenging traditional notions of gender and sexuality in the animal kingdom and human society.

The Journey of Man by Spencer Wells
Using DNA as a guide, population geneticist Spencer Wells maps all of human history, from our earliest common ancestor to the global diversity we see today, and illuminates the surprising links that connect all of humankind.


CHEMISTRY
The Invention of Air by Steven Johnson
Prolific author Steven Johnson tells the quirky, dramatic story of Joseph Priestley--an 18th century scientist, minister, and associate of Benjamin Franklin and Thomas Jefferson, whose intellectual contributions spanned chemistry, theology, and politics.

The Periodic Table by Primo Levi
Writer, chemist, and Holocaust survivor Primo Levi blends memoir and science writing to tell the beautiful, poignant stories of his life and community--using one element from the periodic table to anchor each chapter.


EARTH SCIENCE
The Two-Mile Time Machine by Richard Alley
Climatologist  Richard Alley offers a glimpse into the world of a climate sleuth and a history of Earth's climate as written in the rings of Greenland's ice cores.

Basin and Range by John McPhee
A classic from Pulitzer Prize-winner John McPhee, Basin and Range is a poetic exploration of the rugged terrain along Interstate-80 through Utah, Nevada, and California--and the geologic processes that created it. A great book for anyone who has ever looked at a landscape and wondered how it came to be.

The Map that Changed the World by Simon Winchester
Prolific journalist and author Simon Winchester chronicles the story of William Smith--a British coal miner whose on-the-job observations of patterns in rock layers and fossils beds led him to develop the first geologic map of the strata beneath the Earth's surface. The map was not greeted with the acclaim one might expect, but Smith and the power of his idea ultimately triumphed.


ENVIRONMENTAL SCIENCE & NATURE WRITING
Last Child in the Woods by Richard Louv
Journalist Richard Louv examines the body of research showing how healthy childhood development is linked with direct exposure to the natural world and makes a compelling case that the current "wired generation" is seriously threatened by "nature deficit disorder."

The Omnivore's Dilemma by Michael Pollan
From the dizzying overabundance of a modern supermarket to the quiet intensity of wild mushroom gathering, Michael Pollan tackles the seemingly simple but ultimately profound question: what should we have for dinner?

The Sea Around Us by Rachel Carson
Today, marine biologist Rachel Carson is probably best remembered for her book Silent Spring and its role in chronicling the effects of pesticides and jumpstarting the American environmental movement. But a decade earlier, in 1951, Carson penned this beautiful, best-selling treatise on the science and poetry of the sea.

The Whale and the Supercomputer by Charles Wohlforth
Journalist and lifelong Alaskan Charles Wohlforth takes readers on a journey to the far North, where climate change is very tangible--to both the scientists studying it and the native people struggling to cope with it.


PHYSICS
How to Teach Physics to Your Dog by Chad Orzel
Physicist Chad Orzel, and his curious dog, Emmy, offer a fun, engaging, and truly unique way to explore quantum mechanics. By considering such practical questions as how to catch a squirrel or locate a bone, Orzel and Emmy dig into the history and technical details of weighty topics like particle-wave duality, the Heisenberg Uncertainty Principle, and quantum entanglement.

Einstein: His Life and the Universe by Walter Isaacson
Acclaimed biographer Walter Isaacson examines the life and world-changing ideas of Albert Einstein. Like many icons of history and science, Einstein is surrounded by legends, and Isaacson offers an interesting new take on what is fact and what is folklore.


TECHNOLOGY & ENGINEERING
The Code Book by Simon Singh
Physicist-turned-award-winning-journalist Simon Singh explores the history and science underlying the secret world of codes and cryptography from Egyptian hieroglyphics to Internet security.

The Human Factor by Kim Vincente
If you've ever felt confused, frustrated, or even endangered by the very technology that is supposed to make life easier and safer, you are not alone. Scientist and engineer Kim Vincente offers a compelling look at how technology has failed us and how we can make dramatic improvements in our satisfaction and safety by factoring the realities of human needs, limits, and habits into technology design.

Biomimicry: Innovation Inspired by Nature by Janine Benyus
Writer, educator, and sustainability consultant Janine Benyus presents a simple but powerful strategy for good design: ask nature. She argues, using compelling examples, that we can learn to design cleaner, more efficient products and technologies by studying nature's 3.8 billion-year record of innovation.


INTERDISCIPLINARY READS
A Short History of Nearly Everything by Bill Bryson
Renowned travel and nature writer Bill Bryson offers a quick and cheeky tour of, well…everything, from the beginning of the universe to the rise of modern human society. Not content to simply rehash what we know, Bryson takes readers on a thoroughly entertaining and enlightening quest to understand how we know what we know.

Merchants of Doubt by Naomi Oreskes and Eric Conway
Science historians Naomi Oreskes and Eric Conway shine the light on a group of high-level scientists who have repeatedly been the voices of dissent on topics like acid rain, climate change, DDT, and secondhand smoke and examine what can happen when scientific research is at odds with political motives.

Finally, we would be remiss not to mention Visionlearning's own book: The Process of Science by Anthony Carpi and Anne Egger
Using examples drawn from everyday life as well as historical case studies from nearly every branch of science, Carpi and Egger offer a clear and concise explanation of how science really works. While that may not sound like the first thing you'd normally toss in your beach bag, The Process of Science is an easy read and great way to reinvigorate (or start) a thirst for scientific thinking. If you're a student considering a career in science or a teacher looking for resources to help students engage in science, this is a must-read.


Thursday, May 13, 2010

NOAA Wants to Hear What You (and your Students) Have to Say

The politics of environmental protection can be exhausting. As we often see, there is a cost-benefit analysis in every proposed change (look no further than the rationale for BP's use of less effective dispersant in the oil cleanup). But the general public does get to have a say many times -- whether or not they know it.

We often here people say that every time we make a purchase, we're casting a vote for what we care about. Do you buy produce that has been shipped halfway around the world instead of what is grown locally? Do you eat seafood that is over-fished or not sustainable? Now the National Oceanic and Atmospheric Association (NOAA) is taking this to another level. NOAA is looking to gather public opinion on ways to reduce the effect of commercial fishing on marine mammals worldwide.

So much of the  seafood that American's consume on a daily basis comes from outside of American waters, where commercial fisherman are not required to adhere to the policies American fisherman do. If your class is interested in policy work, marine protection, or the environment in general, have them read the Federal Register announcement for what NOAA is proposing.  Then, draft a letter or email to NOAA and let them know the consensus.

Members of the public are invited to comment by 5 p.m. Eastern Time on June 29, 2010 via electronic comment at www.regulations.gov, fax (301-713–2313) or mail (mail to: Director, Office of International Affairs, Attn: MMPA Fish Imports Provisions, NMFS, F/IA, 1315 East-West Highway, Silver Spring, MD 20910).

Image copyright Tom Curtis

Wednesday, May 12, 2010

It's National Lab day -- How Are You Celebrating?

National Lab Day was introduced by a large coalition of educators and STEM organizations in November 2010. It's aim? To give an adrenaline shot of excitement about innovation in STEM disciplines to American youth. Today is the official National Lab Day, and we want to hear about what you're doing to celebrate.

The plan for NLD was that, over the course of the last few months, educators interested in conducting STEM projects (and professionals in the STEM disciplines interested in volunteering) would pair up through the NLD website. It appears that while the initiative hasn't been too heavily advertised, they've nevertheless managed to get a good start to the national event. The interactive Projects Map on the website shows what projects are already underway, and some of these are quite exciting!
  • Students in Georgia are working on a Human Biology Project to explore how humans fit into the main branches of biology (e.g. ecology, classficiation).
  • In Minnesota, first graders are exploring how variables such as air and water effect the distance a rocket (powered by water or air) can go.
  • California students are researching how solar panels work, and how they can get a grant for installing them on their school to reduce energy costs.
All in all, it looks as though there are 1,381 projects around the country registered with the NLD site. With some luck, many of the students involved in these projects will feel the excitement that can be had from a career in the STEM disciplines, and will continue on to become America's next generation of innovators.

Are you participating in National Lab Day? Tell us about your project and experiences!

Wednesday, April 28, 2010

When the Valve Doesn't Work and the Boom's Not Enough

"Oil spill" -- it's a dirty noun, and with good reason. For many of us who have been around for more than a few decades, it even triggers some residual trauma. Who can forget the images of dying fish and seabirds washing up on the shores of Prince William Sound, Alaska, courtesy of the Exxon Valdez? Or the ban on fishing that lasted for over 5 months in the fertile Narraganset Bay off of Rhode Island because of a tanker-tug boat collision? Yes, there are many serious consequences to oil contamination in our oceans, and this latest event in the Gulf of Mexico is going to be no exception.

Though the International Tanker Operators Pollution Federation Limited proudly explains how the incidences of oil spills -- regardless of their source -- has significantly declined in the last thirty years (see the graph at right), it doesn't negate the fact that when they do happen, the results aren't pretty. Efforts to stop the leak in the Gulf through the use of robot submarines (closing the well's valve manually) have been unsuccessful, and in the three days since they started trying, the oil slick has moved more than ten miles closer to the shore, threatening wetlands, beaches, and wildlife from Louisiana to Florida. As of Wednesday morning, the slick is 40 miles wide, 80 miles long, and growing by the hour.

The viscosity and density of oil is different than water, and so tends to float on top of it. That is why the early deployment of booms is an important first step in containing spills. Unfortunately, wave action churns crude oil under, creating what looks like "chocolate mousse", and then that oil sinks -- contaminating the delicate ecosystem.

Responses to such spills can take many forms. Boats crews with booms and skimmers can try to contain and mop up the oil before it spreads too far. Planes and helicopters can dump dispersant chemicals into the slick to help the oil break down faster and be less harmful to the ecosystem (think: dropping some Dawn into a sink full of greasy dishes). Pollution containment devices can be constructed at the source, such as a leaking well, to capture the oil. And the oil can be lit on fire, about 95 percent of which is released as carbon dioxide and water into the atmosphere.

While the efforts of the Coast Guard and BP are noble and appreciated -- they are trying a blend of all these techniques -- it appears that they are still weeks away from full containment, and a good three months away from stopping the leak permanently. In the meantime, the oil is expected to reach the Gulf shores as early as this weekend.

Are you using this important news event in your classroom and teaching? We would love to hear how. Share with us and other educators here, or on our Facebook page, how you are talking with students or colleagues about oil spills and cleanups. we would also love to hear about preventative measures folks along the Gulf can take now to protect their shoreline.

Friday, April 23, 2010

E. O. Wilson Takes to Writing Fiction

E. O. Wilson, renowned biologist and one of (if not THE) foremost experts on ant biology and ecology has put pen to paper once again. Only this time, it's to appeal to fiction readers who might not have the time or interest to pick up his more comprehensive nonfiction works.

The novel takes place by the side of a lake in rural southern Alabama. While the story focuses on a young boy who grows up to be a lawyer, the majority of characters, which probably comes as no surprise, are ants. In this undertaking, Wilson says he "had in mind a message, although I hope it doesn't intrude too badly, persuading Americans, and especially Southerners, of the critical importance of land and our vanishing natural environment and wildlife." Read more of his interview with Steve Ross of the Huffington Post here.

It's a unique and interesting undertaking, to say the least. Here, Nature is not just present to provide atmosphere to the story -- it's a main character. Wilson is giving voice to an 'entity' that we typically don't hear from (at least not in the conventional sense). Interestingly, the writer's voice has remained intact during this jump from nonfiction to fiction. The phrasing and terminology used is not unlike that of Wilson's very readable nonfiction books. While it isn't always the most conversational of tones, it is nevertheless quite engaging and gets across a sense of character that many writers of fiction would envy.

What intrigues us more, though, is Wilson's intent before writing -- to create a work of fiction that not only is entertaining, but puts across a sociological message: human beings are a biological species, acting in a biological environment and everything we do impacts all that is around us.

What do you think? Could the new wave of eco-activism be subterfuge? Will making us empathetic to creatures through fiction help a conservation movement that has taken quite a few hits in the last year?

Listen to the NPR podcast on this remarkable new story by clicking here.
Or read a book review by Barbara Kingsolver in the New York Times here.

Wednesday, April 7, 2010

New Species Found in Phillipines

In the last century, advancements in technology and science have allowed for a thorough exploration of our planet and the rapid sharing of information. So, it is a peculiar condition of our modern times that many young people feel that there is nothing left to discover -- everything has already been done and found (especially the big stuff). But as those who work in the various scientific disciplines know, there is always something new to uncover. You just have to look in the right place!

In the latest volume of Biology Letters, scientists working in the Philippines discuss their discovery of a new species of monitor lizard (genus Varanus). The giant, golden-spotted lizard, a relative of the Komodo dragon, is approximate 6 1/2 feet long, lives in the northern forests of the Sierra Madre mountains in Luzon, and feeds solely on fruits and snails. Apparently, the scientists learned about the species for the first time in 2004, when they spotted local tribesmen carrying one of the dead creatures.

As the article notes, the researchers used "data from morphology and mitochondrial and nuclear DNA sequences, [to] demonstrate the taxonomic distinctiveness" of the species. This information provided insight into the biogeographical history of the organism; a phylogenetic analysis shows that, though the lizard differs in "characteristics of scalation, colour pattern, body size, anatomy of the reproductive organs and genetic divergence," it is still closely related to lizards on other, nearby islands.

The discovery is noteworthy for many reasons, but particularly because the organism in question is so large. Finding new species of large vertebrates is not nearly as common as finding new types of frogs, insects, or small fishes. Even more, this discovery comes about on an island under significant threat from development and deforestation. Rafe Brown, a member of the team that discovered the monitor lizard, said in a statement to the Associated Press, that they "hope that by focusing on protection of this new monitor, conservation biologists and policy makers can work together to protect the remaining highly imperiled forests of northern Luzon."

Images copyright of Associate Press and Google.com