Marmots are coming out of hibernation earlier, while chipmunks and ground squirrels sleep longer-effects that could be attributed to global warming. (p. 282)

A recently discovered fossil dinosaur heart is more like the heart of birds and mammals than that of crocodiles, providing further evidence that dinosaurs may have been warm-blooded. (p. 260)

A 95-million-year-old fossil snake with legs may be an advanced big-mouthed snake, not a primitive ancestor. (p. 223)

An iceberg about the size of Connecticut recently split off from the Ross Ice Shelf in Antarctica. (p. 215)

Scientists have identified a large family of proteins that work as taste receptors for bitterness. (p. 196)

Scientists have recently discovered a 10,000-year-old forest buried in the sand in Michigan. (p. 191)

The search is on for an undersea eruption near the Japanese volcanic island chain. (p. 191)