'Lakes' under Mars' south pole: A muddy picture?

Two research teams, using data from the European Space Agency's Mars Express orbiter, have recently published results suggesting that what were thought to be subsurface lakes on Mars may not really be lakes at all.

Canadian military on alert as wildfires rage

The Canadian military was on standby Saturday to help evacuate towns and fight more than 170 wildfires fueled by a record-smashing heat wave and tinder-dry conditions as the government in Ottawa warned of a "long and challenging ...

Swimmers warned about oil after Georgia ship spill

Health officials warned swimmers and fishers to be on the lookout for oil sheens off two Georgia islands after oil spilled from an overturned cargo ship while crews were dismantling it.