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A science experiment aboard NASA's Curiosity rover has found tantalizing traces of possible past life on Mars. But there could be other explanations for where these compounds came from.

How Sotiris Missailidis, head of R&D in Brazil's vaccine agency, used the COVID crisis to push through a game-changing effort for middle-income countries to invent their own mRNA vaccine.

A heavy duty commercial electric mower with long-lasting batteries can cost nearly $30,000, more than three times what a comparable gas-powered machine sells for.

The State Department is slashing hundreds of jobs in what's being called its biggest shake-up in decades — drawing sharp criticism from former diplomats who say the cuts risk gutting America's diplomatic muscle.

Anisimova was a teenage tennis prodigy. But by 2023, tournaments had become "unbearable" for her mental health, and she stepped away. Now, she is a win away from her first Grand Slam title.

The governors of California and New York have sounded the alarm that hospitals may be overwhelmed this winter if COVID-19 infection rates continue to rise.

The Supreme Court rejected a Texas lawsuit challenging the election results in fours swing states. It was a long-shot attempt by President Trump's allies to overturn President-elect Biden's victory.

After WWI and the flu epidemic, pent-up demand led to crowds of fans wanting to see baseball games. Now people wonder if pent-up demand will do something similar for industries hard hit by COVID-19.

A dreamy woman in white painted by James McNeill Whistler is the center of a new show at the National Gallery of Art in Washington, D.C.

The new Apple TV+ drama Severance asks what might happen if a corporation discovered how to disconnect employees' work and non-work memories.