They were minding their own business in Mexico and Arizona in the 19th century when incoming farmers disrupted their water supply.

ECONOMIST: The theory of the thrifty gene

There's a swirling blend to the city, like the water in the creek where it meets the incoming tide.

BBC: Mombasa: One Square Mile of Kenya

Melting on the ice sheet's surface acts as a feedback mechanism, Dr van den Broeke explained, because the liquid water absorbs more and reflects less of the incoming solar radiation - resulting in a heating of the ice.

BBC: Greenland ice loss 'accelerating'

The water table rose several years ago completely flooding the island and the incoming saltwater killed off the trees.

BBC: Relaxing among the Yucatan's flamingos