Climate change may prevent contact with alien civilisations [View all]

[Benton D Struckcheon]

Oddball headline, but the article is quite interesting: something I didn't know, stars tend to increase their output with age. Meaning that a planet in the habitable zone of a solar system may not be in a few million years.
In our own case, the only reason Earth has remained habitable is that more land has slowly been created by volcanic processes, and life has of course sequestered massive amounts of carbon, both of which neutralized the effect of increasing output from the Sun. Which makes the current situation with CO2 even more pressing, IMO.

Link: http://phys.org/news/2014-06-climate-contact-alien-civilisations.html