Science writing intern, Fall 2021
Freda Kreier was an intern at Science News in the fall of 2021. She holds a bachelor’s degree in molecular biology from Colorado College and a master’s in science communication from the University of California, Santa Cruz.
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All Stories by Freda Kreier
Vikings may have fled Greenland to escape rising seas
Vikings abandoned Greenland in the 15th century. Lower temperatures, an expanding ice sheet and rising sea levels may have played a role in their departure.
Fungi may be crucial to storing carbon in soil as the Earth warms
Fungi help soil-making bacteria churn out carbon compounds that are resilient to heat, keeping those compounds in the ground, a study suggests.
An ancient exploding comet may explain why glass litters part of Chile
A 75-kilometer-long corridor of chunks of glass in the Atacama Desert probably formed when a comet exploded 12,000 years ago, a study finds.
Scientists are racing to save the Last Ice Area, an Arctic Noah’s Ark
The Last Ice Area may be the final refuge for summer sea ice and the creatures that depend on it. Saving it is an ambitious goal with many hurdles.
Earth’s lower atmosphere is rising due to climate change
In the Northern Hemisphere, the upper boundary of the troposphere, the slice of sky closest to the ground, rose 50 to 60 meters a decade from 1980 to 2020.
Gene-edited stem cells help geckos regrow more perfect tails
Regenerated gecko tails are a far cry from perfect. Now experiments have coaxed geckos to regrow better ones with nerve tissue and bonelike cartilage.
What the Perseverance rover’s quiet landing reveals about meteor strikes on Mars
InSight tried to detect seismic waves created by the arrival of its sister mission, helping scientists uncover how Mars absorbs energy from impacts.
Dog DNA reveals ancient trade network connecting the Arctic to the outside world
People in Siberia were exchanging canines and probably other goods as early as 7,000 years ago with cultures as far off as Europe and the Near East.
China’s lunar rock samples show lava flowed on the moon 2 billion years ago
The first lunar rocks returned to Earth in more than 40 years show that the moon was volcanically active later than scientists thought.
Health & Medicine
Discovering how we sense temperature and touch wins the 2021 medicine Nobel Prize
Finding sensors on nerve cells that detect temperature and pressure nets California scientists David Julius and Ardem Patapoutian a Nobel Prize.
This is the oldest fossil evidence of spider moms taking care of their young
A spider trapped in amber 99 million years ago guarded her eggs and may have helped raise her young.
‘Ghost tracks’ suggest people came to the Americas earlier than once thought
Prehistoric people’s footprints show that humans were in North America during the height of the last ice age, researchers say.