April 5, 2018, 9:36 p.m.
Gullies of Matara Crater
Gullies on Martian sand dunes, like these in Matara Crater, have been very active, with many flows in the last ten years.
tutti - social network
Tutti is the simplest social network on internet. Here you can make friends, create communities, sell things, make surveys, comment and share stuff.
Planting 20 percent more trees in our megacities would double the benefits of urban forests, like pollution reduction, carbon sequestration and energy reduction. The authors of the study say city planners, residents and other stakeholders should start looking within cities for natural resources and conserve the nature in our urban areas by planting more trees.https://www.sciencedaily.com/releases/2018/01/180118162455.htm
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