Photo illustration by John Brecher / NBC News
Hayley Saul / BioArCh at the University of York
YouTube screengrab from Telegraph.co.uk
Cassidy et al. / Environmental Research Letters
Navesh Chitrakar / Reuters /
NASA won't be printing out pizzas on Mars anytime soon, but the space agency is paying out $125,000 to study the use of 3-D printing...
State University of New York /
Joe Raedle / Getty Images file /