From Jenna Orkin Robert F. Kennedy, Jr., Isn’t Going Away Disneyland Characters Unionize Chemical analysis of natural CO₂ rise over the last 50,000 years shows that today's rate is 10 times faster Iran's first vice president appointed president by supreme leader after helicopter crash kills Raisi Three reported killed as DR Congo military averts ‘attempted coup’ Long-term study finds organic farming leads to adaptations in the genetic material in plants A Vast, Untapped Source of Lithium Has Just Been Found in The US Great Mystery of How Ancient Egyptians Built The Pyramids Finally Appears Solved Breaking Light Speed: The Quantum Tunneling Enigma Three separate research groups have demonstrated quantum entanglement over several kilometers of existing optical fibers in urban areas--a major step toward a quantum internet.