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Artist’s rendition of a neuron silhouetted against a glowing red background.
SNO-y Protein Levels Help Explain Why More Women Develop Alzheimer’s
Female postmortem brains contain more S-nitrosylated C3 proteins, likely linked to menopause, which instruct immune cells to kill neuronal synapses.
SNO-y Protein Levels Help Explain Why More Women Develop Alzheimer’s
SNO-y Protein Levels Help Explain Why More Women Develop Alzheimer’s

Female postmortem brains contain more S-nitrosylated C3 proteins, likely linked to menopause, which instruct immune cells to kill neuronal synapses.

Female postmortem brains contain more S-nitrosylated C3 proteins, likely linked to menopause, which instruct immune cells to kill neuronal synapses.

nitrogen
Matthieu Groussin sits with three other people on stools in front of a low table, on which there are several bowls of food. Another person stands above Groussin spooning something into a bowl.
Q&A: Gathering Diverse Microbiome Samples
Katherine Irving | Nov 3, 2022 | 8 min read
Cofounders of a microbiome biobank speak with The Scientist about their new partnership with nonprofit OpenBiome and how to ethically work with donors.
Rows of soybean plants with green leaves beneath a partially clouded sky with the rising sun in the background.
As Carbon Dioxide Goes Up, Plants’ Nutrient Content Declines
Dan Robitzski | Nov 3, 2022 | 5 min read
Abundant environmental CO2 can increase plant biomass and photosynthesis, but it has downsides for agriculture and ecosystems, a growing body of research finds.
A mesquite tree in an arid environment
Climate Change May Favor Nitrogen-Fixing Plants
Andy Carstens | Oct 17, 2022 | 2 min read
Aridity appears to configure landscapes with a greater diversity of plant species that rely on symbiotic bacteria for nitrogen.
Natural sunbeams underwater through water surface in the Mediterranean sea on a seabed with neptune grass, Catalonia, Roses, Costa Brava, Spain
Marine Plant Partners with Microbes Like Terrestrial Plants Do
Rachael Moeller Gorman | Mar 14, 2022 | 3 min read
A seagrass relies on symbiotic bacteria inside its roots to fix nitrogen. This is the first time scientists have demonstrated that this relationship occurs in a marine plant.
Infographic showing how a new bacteria species called <em>Candidatus Celerinatantimonas neptuna</em> lives in seagrass and how it provides the plant with nitrogen
Infographic: Nitrogen-Fixing Bacteria Live Inside Seagrass Roots
Rachael Moeller Gorman | Mar 14, 2022 | 1 min read
Researchers can now explain how some marine plants obtain their nitrogen.
Photo of Romaine River in Quebec
Microbial Analysis of River Reveals Considerable Diversity
Annie Melchor | Mar 1, 2022 | 4 min read
Scientists in Canada trace how aquatic communities change as Quebec’s Romaine River flows into the sea.
small striped mammal
Gut Microbes Help Ground Squirrels Endure Hibernation
Alejandra Manjarrez, PhD | Jan 27, 2022 | 4 min read
By breaking down urea, the animals’ gut bacteria recycle nitrogen, which can be then used to build new molecules during prolonged fasting.
Cicada nymph on a tree, shedding its exoskeleton
Scientists Go Down the Cicada Hole
Lisa Winter | Jun 24, 2021 | 3 min read
Brood X’s emergence tunnels—numbering in the hundreds per square meter of soil—give researchers a special opportunity to study how such extreme soil aeration affects the ecosystem.
a bay in the Antarctic
Nitrogen-Fixing Microbes Found in Antarctic Sea
Shawna Williams | Oct 28, 2020 | 4 min read
The discovery puts a nail in the coffin of a long-held assumption about the limits of where the essential process can occur.
Baby Born from Egg that Was Matured and Frozen in the Lab
Catherine Offord | Feb 19, 2020 | 2 min read
A cancer patient who underwent the new fertility preservation procedure successfully gave birth five years after her immature eggs were collected.
ants symbiotic plants
Image of the Day: Farming Ants
Amy Schleunes | Jan 22, 2020 | 2 min read
Evolution imbued ants with an agriculture strategy that optimizes food rewards.
Image of the Day: Symbiotic Algae
Emily Makowski | Jan 13, 2020 | 1 min read
Anemones keep their algae populations in check.
New Woes for MIT Media Lab
Ashley Yeager | Sep 24, 2019 | 3 min read
Researchers say the Open Agricultural Initiative promoted a high-profile project with misleading claims, and documents show it violated state environmental regulations.
coral erosion bioerosion maui hawaii nitrogen isotopes wastewater
Image of the Day: Eroded Coral
Chia-Yi Hou | Apr 11, 2019 | 1 min read
Coral reefs near Maui, Hawaii, show signs of erosion due to excess nutrients from wastewater.
An Invasive Midge Could Wreak Havoc on Antarctica
Carolyn Wilke | Dec 19, 2018 | 3 min read
The insects have already transformed parts of Signy Island in the South Atlantic Ocean and could drastically change Antarctic ecosystems if introduced by humans.
Rat Remains Reveal Landscape Changes Wrought by Human Settlement of Polynesia
Shawna Williams | Sep 1, 2018 | 4 min read
Isotope changes in the bones demonstrate a similar pattern across far-flung islands.
Image of the Day: Slimy Business
Sukanya Charuchandra | Aug 13, 2018 | 1 min read
A new study reports finding corn species in Mexico that can trap nitrogen.
Rat Infestation Takes a Toll on Nearby Coral Reefs
Shawna Williams | Jul 12, 2018 | 1 min read
A study shows that by killing off seabirds on islands, rodents slash the flow of nutrients into the ocean.
Even in the Bronze Age, Humans Altered Soil Chemistry
Kerry Grens | Jun 13, 2018 | 1 min read
Ancient bones from Ireland reveal that farming has changed nitrogen composition in land for the last 3,000 years.
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