Super-Earths are bigger, more common and more habitable than Earth itself
Astronomers are discovering more of the billions they think are out there
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