New study examines rare sedimentary rocks atop some of the planet's oldest large land masses.

Charles Q. Choi, Contributor

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Robots and self-driving cars could deliver packages efficiently. But will they create new hazards?
Krystal Vasquez, Contributor
Iodine-based ion propulsion could power small satellites and help solve our space junk problem.
Jessica Orwig, Contributor
If the world can limit future greenhouse gas emissions, scientists are hopeful that adaptations can help a battered industry survive.
Benjamin Plackett, Contributor
Scientists prepare to probe other planets by combining different ways to detect signs of life.
Zack Savitsky, Contributor
New research suggests the birds must sense Earth's magnetic field using some other part of their anatomy.
James Gaines, Contributor
Experiments showed how cats can track their owners by listening for their voice
Haley Weiss, Staff Writer

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