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They made children wear socks until they got good and smelly.

Later on, they decapitated mosquitoes.

Those were two steps in an ... unusual ... study to learn why female mosquitoes (males don't bite) are more likely to feed on people with malaria than non-infected people.

But scientists haven't known exactly how the parasite that causes malaria, called Plasmodium, pulls off this manipulation

Updated at 10:35 p.m. ET

One person died after a Southwest Airlines plane experienced serious engine trouble Tuesday and was forced to make an emergency landing in Philadelphia. Seven other people on Flight 1380 were injured. It is the first U.S. airline fatality since 2009.

Updated at 8:05 p.m. ET

Tax filers have little longer to get their paperwork in to the Internal Revenue Service.

In a statement, the IRS announced it is giving taxpayers an additional day to file and pay their taxes after technical issues on the agency's website made it impossible for people to view their tax record or make payments for much of the day on Tuesday.

Falls are a leading cause of injury and death among older adults. In 2014, about 1 in 3 adults aged 65 and older reported falling, and falls were linked to 33,000 deaths.

If you want to reduce the risk of falling, regular exercise may be your best bet, according to the latest recommendations from the U.S. Preventive Services Task Force.

Police in Cambridge, Mass., tackled and punched a black Harvard student who was standing naked on a traffic island on Friday night. The incident was captured on video by witnesses, and the city's mayor called the video "disturbing."

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