Deep in the driest and hottest part of Israel, a California-born botanist is trying to remake the Negev Desert with productive trees that thrive on abuse.
In the first of a series of stories tracking their progress in real time, three scientists explain the genesis of a global effort to present the health of the world's oceans with a single number.
While common sense says more water by an airport means more waterfowl for planes to hit, wetland conservationists point out that not all birds contest the skyways.
A volunteer program to protect nests for the tiny, threatened snowy plover on a popular surfing beach has proven a model, but the birds still can't fly solo.