According to a recent article in the journal Science, if you were alive in the year 1970, more than one in four birds in the US and Canada has disappeared within your lifetime. What’s happening, and which birds are most in danger?

When and why do deer lose their antlers? How do squirrels organize their nut hoards? What do shrews eat? Are bobcats making a comeback in the mid-Hudson Valley?

Unlike horns, antlers grow anew each year. But why?

Which kinds of trees make which color leaves? Why do we see so many spiderwebs in the fall? When were apples first cultivated in the Hudson Valley? Can woolly bear caterpillars predict the weather?