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For centuries, people thought sap had to flow down a tree's body through a spigot at the bottom. But researchers have discovered that sap can flow upward, too, which allows syrup production from much younger trees, and could even turn maple syrup into a row crop.

The Welsh multi-instrumentalist helped take his self-named band to the Top 10 in the U.S. and the U.K. in the mid-1960s and launched the career of Steve Winwood.

On Dec. 21, Jupiter and Saturn will appear on top of each other in the night sky to form a bright "Christmas star" — something that hasn't happened in nearly 800 years.

Dr. Rochelle Walensky is an infectious disease expert and teaches at Harvard Medical School. She will replace Robert Redfield, the current director of the Centers for Disease Control and Prevention.

President-elect Joe Biden has promised diversity, but so far, many of his choices for Cabinet positions and top White House jobs share one common thread in their résumés.

An administration spokesman said senior government officials would be among the first to get the vaccine, but the president himself later said that White House staff would get it later.

In the past week, the U.S. has blown past record levels of infection that were seen in the summer, when new cases topped 77,000 in July.

The goal, XPrize says, is to tackle "the biggest threat facing humanity — fighting climate change and rebalancing Earth's carbon cycle. "

In a letter to state officials, the top prosecutor in Atlanta said the investigation will look into potential violations of state law stemming from Trump's call with election officials last month.

The social network is fighting foreign efforts to manipulate and mislead its users ahead of the 2020 presidential election. CEO Mark Zuckerberg called election security one of his "top priorities."