Vanishing dinosaurs, breeding birds, redback spiders and more
At least five species of birds that breed in North America in spring or summer breed again, in Mexico, en route to their southern wintering grounds, say University of Washington-led researchers. Such "migratory double breeding" had not been documented in the Americas before. The loss of Mexican nesting grounds may explain some birds' population declines.
Learn more about the Yellow-billed cuckoo at the Encyclopedia of Life.
The spectacular sights of the cosmos are now as easy to see as the stars above, with the 18 lavishly illustrated lectures of A Visual Guide to the Universe, produced in partnership with the Smithsonian. Orbit Saturn, search for water and life on Mars, and witness an armada of space telescopes uncovering the secrets of the cosmos.
What If?: Serious Scientific Answers to Absurd Hypothetical Questions [Randall Munroe] on Amazon.com. *FREE* shipping on qualifying offers. From the creator of the wildly popular webcomic xkcd, hilarious and informative answers to important questions you probably never thought to ask. Millions of people visit xkcd.com each week to read Randall Munroe's iconic webcomic.