An X-class solar flare that erupted on July 12 but was initially thought to have affected the earth only weakly revealed its full power on Saturday night in the form of displays of the Northern Lights that stretched as far south as Colorado and Arkansas. In the southern hemisphere, auroras…
BUENOS AIRES — Argentine experts have discovered the near-complete remains of a new species of Jurassic-era dinosaur that stood on its rear legs and had tiny arms, according to a leading paleontologist. The find belongs to the Abelisaurus family, “the most common carnivorous species in the southern hemisphere during the…