Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. CNN  —  The wreck of the Titanic sits in two parts at the bottom of the North Atlantic Ocean, slowly decaying nearly 4,000 meters (13,000 […]

CNN  —  He has about 2,500 kilometers to go until his journey is complete. But the great-grandson of India’s first prime minister appears determined. Dressed head-to-toe in white, Rahul Gandhi is walking 3,500 kilometers (2,175 miles) across India to meet voters and revive interest in […]