During the fluctuations between warm and cold climates, the chemistry of Mars' atmosphere was also fluctuating. CO 2 is constantly hit by sunlight and converted to CO. In warm periods, the CO ...

And if it’s hot or cold. But climate is worked out by looking ... That’s why we need to look after our planet, so it can look after us! Our world is getting hotter. This is affecting the ...

Mars may once have held enough water to fill oceans and form coastlines. The planet’s red dust contains water and likely formed in cold conditions.