Hidden lava tubes on Moon, Mars can serve as human habitats
Lava tubes can form in two ways: 'overcrusted' tubes form when low-viscosity lava flows fairly close to the surface, developing a hard crust that thickens to create a roof above the moving lava stream.
Sep 26, 2017, 19:04 PM ISTChina mulls first amendment to wildlife law
China's top legislature is deliberating an amendment to the Wildlife Law, the first since it came into force in 1989.
Dec 26, 2015, 18:38 PM IST