As Earth approaches warmer levels experienced earlier in its geologic history, it may be bad news for human survival.

Pope Francis' recent bout with pneumonia, which landed him in the hospital for the fourth time, fueled speculation in Rome.

If you're perching on the fence about whether to go birding, here's a handful of reasons to get out there this year.

Native American activist Leonard Peltier was defiant toward the government but grateful to his family and supporters as they ...