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Miners may need to get their feet — and everything else — wet as they carefully seek out loads of copper and other valuable natural resources.
Scientists observe some evolutionary speed demons as they adapt over the course of just a few years to new environmental conditions.
Satellites, coral reefs, ancient Roman fishponds and sinking cities help us understand how humans are changing sea level.
Invasive earthworms change North American landscapes, for better or worse.
Overfishing cuts number of large predator fish in the ocean.
Carbon dioxide is making the oceans more acidic.
Although fish farms can supply lots of food, these operations may also cause pollution and hurt wild populations.
Sediment from Arctic lakes shows that much of the Northern Hemisphere has been warming for many decades.
Global warming may be wiping out some plants and animals or pushing them into new habitats.
Vultures may be getting a deadly dose of medicine from the carcasses they feed upon.