“Carbon dioxide is a strong greenhouse gas, so it really was the leading candidate to explain the drying out of Mars,” said Kite, an expert on the climates of other worlds. “But these results suggest it’s not so simple.”
CO2’s molar mass is 44. O2 is 32. CO2 is heavier than air, and thus it sinks.
It’s why we have phytoplankton, seaweed, etc in our oceans. Were it not the case, there would be no sustainable food chain in the ocean.
Leaving one important scientific question:
Who did this person sleep with to get this job?