What did people in the Stone Age eat before the advent of farming around 10,000 years ago? A long-held stereotype — one that’s influenced modern fad diets — is that ancient humans hunted large animals and chowed down on mammoth steak. But new research on a Paleolithic group called the...
photo: Creative Commons / Ninaras https://commons.wikimedia.org/wiki/User:Ninaras
The changes that our species is making to the planet are deeper than initially thought. Not only are the impacts of human activity changing the surface and climate of the Earth, but new research suggests that we have also changed the deep subsurface, a zone located hundreds of meters to several...
photo: European Community / Lukasz Kobus
photo: ESA/Hubble & NASA, J. Dalcanton; Acknowledgement: Judy Schmidt (Geckzilla)
Propulsion is always a big deal when it comes to space missions. Every gram counts when going up into space, so the more energy-dense your fuel is the better. You also usually can’t refuel once you are out there. An alternative solution, which doesn’t have this problem, is using a solar sail. By...
photo: NASA
