pandemics Four more cats die from H5N1 as new report calls evidence for efficient mammal-to-mammal transmission "unprecedented" Jennifer Sandlin
Science NASA and the European Space Agency explore ways for astronauts to hibernate during long space journeys Ruben Bolling
Bald eagle 31-year-old male bald eagle, Murphy, who tried to incubate a rock, might be getting his own baby bird to raise after all! Jennifer Sandlin
animals Scientists discover that chimps apply "medicine" to each other's wounds because they are kind David Pescovitz
otters Man walking in Singapore garden attacked by otters: "I thought I was going to die" Carla Sinclair
books Read an exclusive excerpt from "An Internet In Your Head: A New Paradigm For How The Brain Works " Thom Dunn
Delightful Creatures It won't be as easy as it used to be to bring comfort animals on a Delta flight Mark Frauenfelder