Global warming is making for a hot 2014. Last month was the hottest June ever, according to the National Oceanic and Atmospheric Administration. It came after global warming made May the world's hottest on record.
The emperor penguin, the world's largest penguin, faces a dramatic population decline over the next 85 years, researchers say. Shrinking Antarctic ice sheets threaten the habitat and food sources of the emperor penguin.
The sucker-footed bats of Madagascar have finally found an ancestor, in an Egyptian excavation site. Five little jawbones offer big clues about where bats originated, and how they migrated across ancient continents.