By the end of the 20th century, physicists thought they knew the universe’s fate: it would expand forever, its galaxies drifting into isolation. Astrophysicist Ethan Siegel (@StartsWithABang) explains why new measurements suggest dark energy may not be constant after all. Read it
A sex strike to end a war is the plot of Aristophanes’ Lysistrata, first staged in 411 BC. Big Think’s Scotty Hendricks picks four ancient Greek comedies, including The Clouds and Menander’s Dyskolos, that still hold up today. Read it here:
In 1886, Friedrich Nietzsche wrote that humans are “the yet-undefined animal.” As AI matches trait after trait we once called uniquely human, philosopher Pia Lauritzen argues that what sets us apart is our need to define who we want to be. Read it here: