What Earth's changing climate can teach us about altering the surface of Mars

In a rare instance of environmental success, the United Nations has just announced it believes the damage to the Earth's protective ozone layer will be fully restored by the year 2050. This stands in stark contrast to the increasing alarm over the climate emergency, caused by an increasing greenhouse effect.

from Phys.org - latest science and technology news stories https://ift.tt/2nNkHot

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