Top Stories: Caffeine, Camels, and Cancer-Causing Supplements China Promises to Ante Up Nuclear-Monitoring DataChina has promised to share data with the world’s main nuclear weapons monitoring outfit, the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO). The country will share information from 10 stations on its territory, and the added data should help intelligence agencies size up North Korea’s nuclear arsenal.Camels May Transmit New Middle Eastern VirusMiddle East respiratory syndrome (MERS) is a SARS-like coronavirus that has sickened 94 people and killed 46 since its debut last year. Now scientists think that they’ve uncovered the source of the mysterious outbreak: retired racing camels. They think the animals may be harboring the virus and are transmitting it to people.First Artificial Burger Gets Tepid Reviews, Billionaire Financier UnmaskedOn Monday, scientists unveiled the world’s first “test-tube” burger, made from 20,000 tiny pieces of tissue grown from cow stem cells in a lab. The review ("Close to meat. Not that juicy.") and the price tag ($375,000) mean that you’re probably not going to see it on your plate any time soon. But that wasn’t the point: The team wanted to show that it’s possible to produce meat without slaughtering animals.No Coffee for Pregnant Moms?It’s often one of the first questions a woman asks her doctor when she learns she’s pregnant: Can I keep drinking coffee? Expectant moms are generally told not to drink more than a cup or two a day. But a new study in mice offers the controversial suggestion that the equivalent of three or four cups of coffee a day could affect the developing baby’s brain and cause long-term damage. Common Herbal Supplement Linked to CancerMany people turn to herbal supplements to improve their health. But herbal doesn’t necessarily mean safe. Two new studies have found that birthwort, an ingredient commonly found in supplements and widely used in Asia, may be as cancerous as smoking.