Study links continent creation to 200-million year galactic comet cycle
When comets strike Earth they excavate & melt large portions of the mantle causing the molten rock to rise to the surface & float
China burns more coal as drought cripples hydropower system
Hydroelectricity production fell 50% in the province of Sichuan, which provides 21% of China’s hydropower
Scientists say exoplanet 100 light years from Earth may be covered with deep ocean
The exoplanet orbits "a nearby visual-binary M dwarf" star