PlanetEarth Online

Dinosaur forests mapped

The first detailed maps of the Earth's forests at the time of the dinosaurs have been drawn up. The patterns of vegetation, together with information about the rate of tree growth, support the idea that the ...

Feb 28, 2012 4.6 / 5 (5) 7 | with audio podcast

How green are green roofs?

Covered with a growing medium and plants, green roofs can benefit a building's insulation, control storm-water drainage and remove pollution from the air, as well as provide wildlife habitats.

Sep 21, 2011 4.2 / 5 (5) 1