From Jenna Orkin China, Russia commence joint drills, patrol The disaster no major U.S. city is prepared for Springfield bomb threat used ‘hateful’ language toward migrants, Haitians, mayor says Russia expels U.K. diplomats; Putin warns against deep strikes with Western weapons North Korea reveals uranium site as Kim Jong Un demands more nuclear weapons That said, an editor at Defector this week laid out an argument against the feasibility of human colonies at Mars. • Scientists will engineer the ocean to absorb more carbon dioxide. Ig Nobel prize goes to team who found mammals can breathe through anuses To save endangered trees, researchers in South America recruit an army of fungi Perplexing the Web, One Probability Puzzle at a Time