Aircrafts' Vapor Trails Trap Heat
The innocuous white vapour trails that criss-cross the sky might have contributed to more global warming so far than all aircraft greenhouse gas emissions put together.
Aircrafts' contrails function similarly to clouds by spreading out and trapping heat in the atmosphere. "High-altitude clouds like cirrus warm the planet by trapping heat. Contrail 'cirrus' does the same thing, but the question is: how much? We know that contrails trap some extra energy in the atmosphere: their radiative forcing trapped 10 milliwatts per square metre (mW/m2) in 2005, according to an estimate by the Intergovernmental Panel on Climate Change. That compares with 28 mW/m2 trapped by all of the CO2 released by aircraft engines since the start of aviation."
The way that you think about stress can actually transform the effect that it has on you – and others.
- Stress is contagious, and the higher up in an organization you are the more your stress will be noticed and felt by others.
- Kelly McGonigal teaches "Reset your mindset to reduce stress" for Big Think Edge.
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These quick bursts of inspiration will brighten your day in 10 minutes or less.
Explore a legendary philosopher's take on how society fails to prepare us for education and progress.
- Alan Watts was an instrumental figure in the 1960s counterculture revolution.
- He believed that we put too much of a focus on intangible goals for our educational and professional careers.
- Watts believed that the whole educational enterprise is a farce compared to how we should be truly living our lives.
How can we use the resources that are already on the Moon to make human exploration of the satellite as economical as possible?
If you were transported to the Moon this very instant, you would surely and rapidly die. That's because there's no atmosphere, the surface temperature varies from a roasting 130 degrees Celsius (266 F) to a bone-chilling minus 170 C (minus 274 F). If the lack of air or horrific heat or cold don't kill you then micrometeorite bombardment or solar radiation will. By all accounts, the Moon is not a hospitable place to be.
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