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Before yesterdayNYT: Science

Scientists Calculated the Energy Needed to Carry a Baby. Shocker: It’s a Lot.

✇NYT: Science
By: Carl Zimmer
16 May 2024 at 14:00
In humans, the energetic cost of pregnancy is about 50,000 dietary calories — far higher than previously believed, a new study found.

© Dr. G. Moscoso/Science Source

Researchers estimate that a human pregnancy demands almost 50,000 dietary calories over nine months, the equivalent of about 50 pints of ice cream.

U.S. Tightens Rules on Risky Virus Research

✇NYT: Science
By: Carl Zimmer and Benjamin Mueller
7 May 2024 at 11:42
A long-awaited new policy broadens the type of regulated viruses, bacteria, fungi and toxins, including those that could threaten crops and livestock.

© Karen Ducey/Getty Images

Working inside a biosafety Level 3 lab at the University of Washington School of Medicine in 2020.

What Makes a Society More Resilient? Frequent Hardship.

✇NYT: Science
By: Carl Zimmer
1 May 2024 at 11:00
Comparing 30,000 years of human history, researchers found that surviving famine, war or climate change helps groups recover more quickly from future shocks.

© Wirestock, Inc., via Alamy

The city of Caral thrived in Peru between about 5,000 and 3,800 years ago. It was then abandoned for centuries before being briefly reoccupied.

How do Cicadas Know When to Come Out?

✇NYT: Science
By: Carl Zimmer
25 April 2024 at 11:11
Scientists are making computer models to better understand how the mysterious insects emerge collectively after more than a decade underground.

© Will Dunham/Reuters

The United States is home to a dozen cicada broods that have a 17-year cycle, and three with a cycle that takes 13 years.

W.H.O. Broadens Definition of Airborne Diseases

✇NYT: Science
By: Carl Zimmer
18 April 2024 at 06:00
After a drawn-out global controversy over the coronavirus, the W.H.O. has updated its classification of how pathogens spread through the air.

© Alena Ivochkina/Alamy

What Makes Tiny ‘Water Bears’ So Tough? They Quickly Fix Broken DNA.

✇NYT: Science
By: Carl Zimmer
12 April 2024 at 12:49
New research finds that the microscopic “water bears" are remarkably good at repairing their DNA after a huge blast of radiation.

© Steve Gschmeissner/Science Photo Library

Coloured scanning electron micrograph (SEM) of a water bear, or tardigrade (phylum Tardigrada). Water bears are small, water-dwelling, segmented micro-animals with eight legs that live in damp habitats such as moss or lichen.
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