Adjunct Professor of Biology, University of Miami, Coral Gables, Florida, and Professor (Emeritus), Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara.The New York Times has called him "one of the world's leading environmental researchers," who has "done much to popularize the concept of using yet maintaining the world's natural … [Read more...]
New Speech Topic: The Future of Our National Parks: How Should They Fit into the 21st Century?
2016 will be the centennial of the National Park Service and it faces many challenges, which I will discuss and make recommendations. These include: appealing to America’s ever more diverse population; conservation of biodiversity as the environment changes; invasive species; introduction of endangered species; the role of the parks in responses to climate change; the use of … [Read more...]
Is it People Versus Nature or People Within Nature?
Among the many stories that have come out of the Australasian Antarctic Expedition that got stuck in the ice, is this quote: “It's fantastic—I love it when the ice wins and we don't," marine ecologist Tracy Rogers told the BBC journalist onboard, adding: "It reminds you that as humans, we don't control everything and that the natural world—it's the winner here." It’s an … [Read more...]
Thinking about Goals for People and the Environment
Having worked in ecology and dealt with applied environmental problems for 45 years, I think about what are the leading environmental problems that face us today in the 21st century. Climate change has captured people’s attention, but there are other issues that we need to consider. Here’s my start of a list, which I discuss in the postscript to my most recent book, The Moon … [Read more...]
My Natural History Travels Following the Life of Henry David Thoreau: Concord, Walden, Maine Woods, and Cape Cod.
I have followed the travels of Henry David Thoreau as he tried to understand nature, wildness, wilderness, and civilization during his lifetime (July 12, 1817 – May 6, 1862). He lived most of his life in Concord, MA, traveling and writing books about: the woods of Maine including his hike up Mt. Katahdin, the state’s tallest mountain; his travels to Cape Cod; and his life at … [Read more...]
My Natural History Travels Following the Trail of Lewis and Clark
I have followed the trail of Lewis and Clark from the beginning near modern St. Louis, Missouri, up the Missouri River, across the Rocky Mountains, and down the Columbia River to the Pacific Ocean. President Thomas Jefferson had instructed them to"record the mineral productions of every kind... Volcanic appearances ... Climate, as characterized by the thermometer, by the … [Read more...]
How Many Grizzly Bears Were There Before European Settlement of the West, and How Many Are There Now?
I tried to estimate how many grizzly bears there were at the beginning of the 19th century and how many there are today. I wrote about this in my book, Beyond the Stony Mountains: Nature in the American West from Lewis and Clark to Today (available 2012 as an ebook, New York, Croton River Publishers; Originally published in 2004 by Oxford University Press, N.Y. ) Here is … [Read more...]
Peanut Butter In Space: How to, and how not to, develop life support systems for long-term space travel.
(This article is based on a chapter in my book Strange Encounters: Adventures of a Renegade Naturalist) If we are going to Mars and hope to settle there, we need to develop reliable ecological life-support systems that provide food, oxygen and water, and recycle wastes. Such a system doesn’t exist, but I have tried to help develop one.Back one day in the early 1970s, I … [Read more...]