Top news for December 21, 2008

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What's next for Roman Space Telescope? Here's how NASA's flagship observatory will open up the universe

President Trump gives Artemis II moon astronauts the Congressional Space Medal of Honor

The popular diabetes drug metformin has been used for decades — and scientists just figured out its main mechanism

2,600 silver coins found in the outskirts of Moscow may have been buried by a medieval plague victim

An amusement park on Mount Vernon? The agency tasked to protect cultural heritage just abdicated its responsibilities, opening the door for federal agencies to wipe out our past

NASA’s Roman Telescope Launches Into Space

What is the best approach to reduce clots on the new heart valve after TAVI?

No demonstration of benefit with hydralazine plus isosorbide dinitrate in heart failure

Nurse-coordinated collaborative care improved outcomes in patients with heart failure

No significant evidence for protection against cardiovascular outcomes with metformin in heart failure