Cavern could collapse, taking part of city

Last of rare rhinos moved in bid to breed
A 38-year-old rhino born in Sudan ate African grasses for the first time in three decades Monday, the first full day on the continent for some of the world's last  northern white rhinos. ...

Experts: Arctic is seeing thinner sea ice
As spring begins, more than 90 percent of the sea ice in the Arctic is only 1 or 2 years old, making it thinner and more vulnerable than at anytime in the past three decades, experts warned...

4.2 million new 'green' jobs predicted
A major shift to renewable energy and efficiency is expected to produce 4.2 million new  "green" jobs over the next three decades, according to a study commissioned by the nation's mayors.

Teaming with Microbes: A Gardener's Guide to the Soil...
Smart gardeners know that soil is anything but an inert substance. Healthy soil is teeming with life-not just earthworms and insects, but a staggering multitude of bacteria, fungi, and other...

Biomaterials Science, Second Edition: An Introduction...
The second edition of this bestselling title provides the most up-to-date comprehensive review of all aspects of biomaterials science by providing a balanced, insightful approach to learning...