A scientist argued that a Viking lander experiment in 1976 detected microbial life on Mars and urged NASA to repeat the tests before future missions. Trump wants his peace board signed in Davos.

Add Yahoo as a preferred source to see more of our stories on Google. The U.S. Immigration and Customs Enforcement (ICE) officer involved in the fatal shooting of Renee Nicole Good was dragged by an ...

In this short video we will explain the physical cause of service tension and what happens when you add soap to water. We will show the energetic nature of surface tension by means of an experiment ...