Unfortunately, humans have a long history of trying to fix their engineering mistakes with more engineering mistakes!

Working at high altitudes is known to aggravate underlying health issues in sea level adapted humans.

NASA has decades of experience in studying the effects of Sick Building Syndrome (SBS) and their experiments show that continuous habitation of an alien environment in Space results in sickness in less than a year in astronauts and a similar environment on Earth produces ill health in humans in just two years.

Based on the medical evidence that clearly states that being above 10,000 feet is hazardous to the health of sea level adapted humans, it is clear that all of the manned facilities on top of the 13,796 feet Mauna Kea summit in Hawaii should be removed and the summit restored back to its native environment.

We have yet to establish a permanent Mars colony for this reason: Trying to colonize Mars with humans is a known suicide mission that no one is talking about.

If you fill the atmosphere with toxins, then you really cannot be surprised if the solar radiation transmission through it becomes toxic to humans.

The human body when kept in an indoor environment of low lux light will not realize that it is daytime, as it cannot sense the increasing levels of daylight that the genetics are accustomed to. As such, by late morning your body may start sending a signal for you to sleep!

In the future, it may turn out that fossil fuels are the blood of the Earth and by extracting them may lead to serious consequences to the Earth's survival, and by association, that of the humans.

A world without forests will likely be a world without humans.