That lone, craggy gum tree on a farm? It's a lifeline for koalas

Certain eucalyptus trees on farms have added nitrogen due to the fertile soil. Despite dangers, koalas will travel from bushland to reach these trees and feed on their nutritious leaves. Farmers should pay heed to this, the ...

Worldwide urban expansion causing problems

As cities physically expanded worldwide between 1970 and 2010, the population in those cities became less dense, according to a study led by a Texas A&M university professor.

Soil scientists determine how abandoned arable land recovers

Soil scientists from RUDN University have found that the rate of accumulation of organic carbon in wild, cultivated, and abandoned soils depends mainly on the type and composition of the soil, and, to a lesser extent, on ...

How climate change caused the world's first empire to collapse

Gol-e-Zard Cave lies in the shadow of Mount Damavand, which at more than 5,000 metres dominates the landscape of northern Iran. In this cave, stalagmites and stalactites are growing slowly over millennia and preserve in them ...

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