A Russian fighter jet on Tuesday dumped fuel on an American drone over the Black Sea then collided with it, causing the drone to crash, the US military said. US European Command said two Russian Su-27 fighters intercepted the unmanned MQ-9 Reaper over international waters and one clipped its propeller while harassing the drone "in a reckless, environmentally unsound and unprofessional manner," the USEC said. Russian intercepts over the Black Sea have become more common and volatile, with several recent incidents caught on camera.

RUSSIA DENIES INCIDENT AS NATO SEEKS TO DE-ESCALATE 

The Environmental Protection Agency on Tuesday proposed the first-ever national drinking water standard for six cancer-causing chemicals known as polyfluoroalkyl substances (PFAS). The proposal is a major milestone in the EPA's strategy to tackle the human-made so-called "forever chemicals" found in water, air and food that have caused tens of thousands of illnesses around the country. Under the new standard, the EPA will require public water systems to monitor for six PFASs.

SEE THE HAZARD POSED BY 'FOREVER CHEMICALS' IN WATER

"Sesame Street" is making its way to the cryptocurrency market next week. Sesame Workshop, a nonprofit organization known for producing several educational children's programs, including the iconic "Sesame Street," has announced that it will release its first NFT (non-fungible token) collection in collaboration with VeVe digital collectibles. The first collection will feature the Cookie Monster, with 5,555 editions for sale.

SEE HOW MUCH A COOKIE MONSTER COLLECTIBLE WILL COST

Who first voiced the Cookie Monster? What's the character's real name?

Tuesday's answer: According to the Guinness Book of World Records, Marilyn vos Savant, a magazine columnist, has the highest IQ score ever recorded with a 228. A score of 160 or higher qualifies as genius.