Hybrid animals can be created in zoos and laboratories. But mixed-up animal mating is also occurring in nature.
Climate change isn't just bad for us land animals. It's bad for sea creatures as well.
Was the continental United State's chilly winter the result of global warming? If so, how could this be?
55 million years ago, as the Earth heated up, many mammal species got smaller. Could the same thing happen again with human-induced global climate change?
While climate change is bad for most of us, grizzly bears may not complain too much -- at least in the near-term.
Global climate is an incredibly complex system that scientists are still trying to figure out.
Scientists have been finding swarms of jellyfish, called blooms, all over the world.
Global warming is a topic of political debate and scientific study these days. Is it happening? Scientists say the evidence is pointing in that direction.
An A Moment of Science listener wrote to us: I keep hearing about the hidden costs of fossil fuels like coal. What exactly does it mean? What are hidden costs?
Tree lines are on the move. Learn how moving tree lines impact animals and other plants.