Earth’s climate is changing, and temperatures, especially in the Arctic, are getting hotter—by about 1°C since the 1950s.
The govt. released a blockbuster report that says, without question, human activity is responsible for most global warming.
Runoff from floodwaters of Hurricane Harvey in Texas now threatens coral reefs in a national marine sanctuary off the coast.
The largest animals to have ever lived on Earth, blue whales maintain their enormous body size by optimizing the energy they gain from the krill they eat.