May 18, 2019

A World Without Clouds

From Quanta Magazine via Twitter:
To imagine 12°C of global warming, think of crocodiles swimming in the Arctic and scorched, mostly lifeless equatorial regions. If stratocumulus clouds disappear, as a new simulation suggests could happen in as little as a century, this is the future.

Crosby Stills and Nash - Suite: Judy Blue Eyes - Live 2012

May 5, 2019

randomized time travel?

Listening to blues while reading Sagan on time travel, especially when it comes to the philosophical problem of time travel from the future - it is probably inconsistent with any sort of 'hard determinism', but may be possible if the inherent randomness (of the 'one' world, or of the one incurred in the 'blurrification' of closed but different timelines) could mask or absorb the 'travelers' (in which case, even if time travel from the future exists, it is not what one would normally think).

https://www.pbs.org/wgbh/nova/time/sagan.html