Humans
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We summarize the week's scientific breakthroughs every Thursday.
- 			 Health & Medicine Health & MedicineThe second-worst Ebola outbreak ever is officially overAs Congo grapples with COVID-19 and other disease outbreaks, the country’s 10th battle against Ebola has ended. 
- 			 Health & Medicine Health & MedicineMillions of COVID-19 cases in the U.S. may have gone undiagnosed in MarchMillions of people in the United States went to the doctor in March with influenza-like symptoms. Many may have had COVID-19, a study suggests. 
- 			 Health & Medicine Health & MedicinePreventing dangerous blood clots from COVID-19 is proving trickyClinical trials of blood-clotting drugs have begun in hospitalized COVID-19 patients, as excessive clotting remains a complication of the disease. 
- 			 Health & Medicine Health & MedicineCOVID-19 case clusters offer lessons and warnings for reopeningAs restaurants, offices and other businesses open, trends in where and how COVID-19 transmission is happening could help guide re-entry strategies. 
- 			 Genetics GeneticsDNA from a 5,200-year-old Irish tomb hints at ancient royal incestRuling families in Ireland may have organized a big tomb project, and inbred, more than 5,000 years ago, a new study suggests. By Bruce Bower
- 			 Health & Medicine Health & MedicineThe steroid dexamethasone is the first drug shown to reduce COVID-19 deathsThe drug might save one of every eight people on ventilators and one of 25 on oxygen. 
- 			 Health & Medicine Health & MedicineCOVID-19 lockdowns helped people get more, but not necessarily better, sleepTwo studies report that people began sleeping more and more regularly after countries imposed stay-at-home orders to slow the coronavirus’ spread. 
- 			 Health & Medicine Health & MedicineThe FDA has canceled emergency use of hydroxychloroquine for COVID-19The malaria drug is unlikely to work as an antiviral and its risks don’t outweigh benefits in use against the coronavirus, the agency rules. 
- 			 Archaeology ArchaeologyClues to the earliest known bow-and-arrow hunting outside Africa have been foundPossible arrowheads at a rainforest site in Sri Lanka date to 48,000 years ago. By Bruce Bower
- 			 Health & Medicine Health & MedicineA critically ill COVID-19 patient just got a double lung transplantA young woman whose lungs could not recover from the coronavirus infection is doing well after a double lung transplant. 
- 			 Life LifeScientists want to build a Noah’s Ark for the human microbiomeJust as the Svalbard Global Seed Vault protects global crop diversity, the Microbiota Vault may one day protect the microbes on and in our bodies. 
- 			 Health & Medicine Health & MedicineNo, you can’t hear the difference between sick and healthy coughsA study shows humans can’t distinguish between the sound of a cough from someone with an infectious disease and someone with a tickle in the throat.