Summary:
The presence
of molecular hydrogen, in addition to carbon dioxide and water, could have
created a greenhouse effect on Mars 3.8 billion years ago that pushed
temperatures high enough to allow for liquid water. Previous efforts to produce
temperatures warm enough to allow for liquid water used climate models that
include only carbon dioxide and water and were unsuccessful. The researchers
used a model to show that an atmosphere with sufficient carbon dioxide, water
and hydrogen could have made the surface temperatures of Mars warm to above
freezing.
Opinion: In
my opinion, we should help to save the environment. We should have more
astronauts to go to mars to stop the green house effect.