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Evolutionary biologist Menno Schilthuizen releases new book; to speak at Academy of Natural Sciences

Check any biology textbook for an example of evolution through natural selection, and you’re pretty much guaranteed to read about the finches of the Galapagos Islands. Some have smaller beaks ideal for eating insects. Others have sturdier beaks that crack seeds. As Charles Darwin realized when he visited the Galapagos, all are descended from colonists

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3 mins read
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The River Wild

by Bernard Brown
I waded in from a rocky bank in the mountains of Schuylkill County and quickly forgot what I was looking for. My plan on that hot afternoon had been to snorkel for turtles, a pursuit that involves actively investigating underwater boulders and snags. Instead, I watched the fish and rocks on the bottom

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3 mins read
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Gardening Issue: Snakes in the Garden

Gardeners, meet your new best friend: the brown snake
Don’t freak out—it’s just a snake. It’s a really tiny snake, totally harmless. The worst it can do is poop on you.
Sure, you weren’t expecting to find a real live snake in West Philly (or North Philly, or Northwest Philly), roaming the soul patch of green that passes for

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2 mins read
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Book Review: Climate Cover-Up

Climate Cover-Up:The Crusade to Deny Global Warming by James Hoggan with Richard Littlemore, Greystone Books, $15It is no accident that about 41 percent of our fellow Americans believe that the seriousness of global warming is being exaggerated. It’s hard to believe that there’s any doubt anymore—it’s like believing that smoking doesn’t cause health problems.

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1 min read