Penguins have thrived in Antarctica's extreme environment for thousands of years, but they still rely on relatively stable weather and ice conditions, and those conditions are changing.
Flooding in portions of Iowa and Illinois, active tropics, and more heat across the United States this week: Enough is enough! Read more on active weather.
Tropical Storm Don is aimed for Texas by Friday or Saturday. The National Hurricane Center forecasts it will become a strong tropical storm with winds around 65 mph.