Renowned physicist Stephen Hawking has given a vote of no confidence to continued life on Earth.The famed scientist, known for his mind-bending theories on space, time, and black holes, says the human race must flee this planet and colonize space within the next century if it hopes to survive.The website BigThink.com lays out his case, outlining a number of apocalyptic scenarios in which humans would become extinct.With the human population reaching unsustainable levels and natural resources continuing to dwindle, the Earth is becoming less and less of a habitable place, the site says.

A group of seventh graders in California, USA has discovered a mysterious cave on Mars as part of a research project to study images taken by a NASA spacecraft orbiting the red planet. The 16 students from teacher Dennis Mitchell's seventh-grade science class at Evergreen Middle School in Cottonwood, California, found what looks to be a Martian skylight - a hole in the roof of a cave on Mars.