Published October 27, 2015
earth , life , science
Tags: earth, science facts, Trees
The great Richard Feynman was a nobelist, a philosopher and a great teacher. In this video he explains how trees are created from thin air!!
This is not intuitive but it is -of course- absolutely true, and a wonderful example of the difference between learning (that trees get their material from CO2) and understanding (*Air* is transformed in to a living tree). Also a testament of how, the beauty one can see in the cosmos, is enhanced with the better understanding of it….
Published October 25, 2015
earth , history , mars , space
Tags: earth, life on mars, mars
It was earlier this month confirmed that liquid water was found on the surface of Mars. This mean that two things have just skyrocketed :
- The chances that we will find life on Mars.
- The chances our mars missions contaminate the planet.
The second one is what we should worry about: Life on Mars is or Life on Mars isn’t. Nothing we can do about it. But the notion that we can destroy it by mistake is really scary.