A small brown crustacean with white spots on it moving on a red branch.
Seaweed Has Its Own Matchmakers: Small Crustaceans
A species that transports the spermatia of red algae is the first known instance of an animal facilitating fertilization in this ancient photosynthetic lineage.
Seaweed Has Its Own Matchmakers: Small Crustaceans
Seaweed Has Its Own Matchmakers: Small Crustaceans

A species that transports the spermatia of red algae is the first known instance of an animal facilitating fertilization in this ancient photosynthetic lineage.

A species that transports the spermatia of red algae is the first known instance of an animal facilitating fertilization in this ancient photosynthetic lineage.

algae
Illustration showing coral health outcomes in response to bleaching events
Infographic: How Corals Remember the Past, Prepare for the Future
Amanda Heidt | Feb 14, 2022
Scientists have documented examples of corals “remembering” prior exposure to heat stress in the field, and are now simulating these phenomena in the lab to better understand their cellular and molecular underpinnings.
Conceptual illustration of coral
Environmental Memory: How Corals Are Adjusting to Warmer Waters
Amanda Heidt | Feb 14, 2022
Corals that previously experienced heat stress respond better the next time around. Researchers are trying to figure out how, and hope to one day take advantage of the phenomenon to improve coral restoration efforts. 
Miscellaneous diatoms, appearing as translucent blue and brownish circles and rhomboid shapes, are imaged in front of a black background.
Q&A: Fluorescence Lets Diatoms Communicate, Coordinate Behavior
Dan Robitzski | Dec 16, 2021
The Scientist spoke with physicist and microbial ecologist Idan Tuval, whose recent paper challenges the assumption that these single-celled organisms only communicate via chemical signals.
The head of a tadpole is pictured. Its eye is black, but the rest of its head is various shades of green
Scientists Use Photosynthesis to Power an Animal’s Brain
Abby Olena | Oct 13, 2021
Injecting oxygen-generating algae into tadpoles allows brain activity to continue in the absence of oxygen, researchers find.
Plant cryptospore fossil found in 480 million-year-old Australian rock
Discovered: Fossilized Spores Suggestive of Early Land Plants
Ruth Williams | Aug 12, 2021
Spores found in 480 million-year-old rock bring the fossil record in line with molecular estimates of when plants first adapted to life on land.
Microscope image of Chlamydomonas
Researcher Sanctioned by PNAS for Not Sharing Alga
Catherine Offord | Jun 9, 2021
Zhangfeng Hu will be unable to submit manuscripts for three years after having violated the journal’s policy about making study materials available to other scientists.
Dead fish due to lack of oxygen floating on water.
Oxygen Levels Dropping in US and European Lakes: Study
Lisa Winter | Jun 7, 2021
Researchers find a widespread decline in dissolved oxygen levels in lakes, which is known to reshape ecosystems.
A scanning electron micrograph of the picozoan Picomonas judraskeda
Picozoans Are Algae After All: Study
Christie Wilcox | May 6, 2021
Phylogenomics data place the enigmatic plankton in the middle of the algal family tree, despite their apparent lack of plastids—an organelle characteristic of all other algae.
Certain Color Varieties of a Coral Are More Protected from Bleaching
Lisa Winter | Feb 25, 2021
In yellow-green and purple versions of the reef-building Acropora tenuis, the genes that code for particular fluorescent and other colorful proteins become more active in the summer, protecting symbiotic algae from thermal stress and resisting bleaching.
Mass Elephant Die-Off Caused by Cyanobacteria, Officials Say
Max Kozlov | Sep 23, 2020
Tests point to a toxic algal bloom that might have led to the unprecedented deaths of hundreds of African elephants in Botswana earlier this year, but the evidence isn’t conclusive.
Proterocladus antiquus green algae evolution photosynthesis nanfen formation
Oldest Green Algae Fossil Discovered in China
Kerry Grens | Feb 25, 2020
The 1-billion-year-old impressions have features similar to modern algae and indicate that photosynthesizing plants evolved at least that long ago.
Blue-Green Algae Produce Methane
Ruth Williams | Jan 15, 2020
Biological production of this greenhouse gas, once thought to be the reserve of anaerobic microbes, occurs in these widespread, photosynthesizing cyanobacteria.
Image of the Day: Symbiotic Algae
Emily Makowski | Jan 13, 2020
Anemones keep their algae populations in check.
Image of the Day: Unusual ATP Synthase
Emily Makowski | Jan 8, 2020
A single-celled organism has an energy-producing enzyme with unique features.
photo of green, tube-like Spirogloea muscicola
Genes from Bacteria Likely Aided Plants’ Move to Land
Shawna Williams | Nov 15, 2019
An analysis suggests that DNA cribbed from soil microbes enabled plants’ ancestors to colonize a terrestrial environment.
Newly discovered protist is a close relative of red algae
Image Of The Day: Predatory Protists
Nicoletta Lanese | Jul 19, 2019
The protist Rhodelphis limneticus bears little resemblance to its close genetic relative, red algae.
freeze frame
Caught on Camera
The Scientist Staff | Feb 1, 2019
Selected Images of the Day from the-scientist.com
Image of the Day: Coral Tables
Carolyn Wilke | Jan 29, 2019
Diverse plots of corals appeared healthier than monocultures at the end of a 16-month study.
Image of the Day: Coral Fluorescence
Kerry Grens | Jan 22, 2019
Green fluorescent protein lures algal symbionts to corals.