Researchers discovered the fossils while exploring a remote area of Argentina in 2011 and pieced together seven partial titanosaur specimens, which suggest it could have been the largest dinosaur known.
Peak Negativity We are about to reach 1 million U.S. Senate race ads. Few had anything nice to say.
Behind the Scenes
The Great Writing Vs. Talking Debate Is it harder to be a good writer or a good talker?
Dangerous Rhetoric Why are some Ebola patients portrayed as criminals, others as heroes?
Introducing Slate’s Marathon Time Predictor A better way to calculate how fast you’ll run.