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Articles on Algae

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Ice on Lake Erie provides winter light for algae thriving below. Sue Thompson

Losing winter ice is changing the Great Lakes food web – here’s how light is shaping life underwater

In winter 2023-24, the Great Lakes’ ice cover was near record lows, peaking at just 16%. Researchers explain how diminishing ice could have consequences for fisheries, and how species are evolving.
The microbiome functions as an ‘invisible organ’ but it often makes its presence known by emitting sounds and smells. (Shutterstock)

The nose knows: How microbiomes and the smells they produce help shape behaviour in bugs, birds, beasts and humans

The microbiome and its signature smells are crucial for most organisms, whether human, insect or plant. The silent signals sent by the microbiome are essential communications that influence behaviour.
Terminus of the Recherchebreen glacier in the Norwegian archipelago of Svalbard, about 760 miles from the North Pole. Arterra Picture Library/Alamy

The melting Arctic is a crime scene. The microbes I study have long warned us of this catastrophe – but they are also driving it

To fully understand the extent of climate-related dangers the Arctic – and our planet – is facing, we must focus on organisms too small to be seen with the naked eye.
Diazotroph (Trichodesmium) bloom in the Coral Sea, captured on 1 September 2019 by the Landsat 8 satellite. The interaction between the physics and biology of the ocean is manifested in these green filaments that snake through the currents. Joshua Stevens/NASA

Climate: modelling micro-algae to better understand the workings of the ocean

The ocean absorbs a quarter of the CO₂ emitted by humans, thanks in particular to phytoplankton, including diazotrophs. Knowing how to model them is crucial to understanding the ocean’s role in climate.
Algae in the St. Lawrence River. The cold waters of Québec are conducive to their growth. Shutterstock

A gourmet revival for St. Lawrence River marine algae

The abundance, versatility and quality of seaweed from the St. Lawrence makes this resource a real asset for Québec. We must now integrate it into our kitchens.
TRAPPIST-1e is a rocky exoplanet in the habitable zone of a star 40 light-years from Earth and may have water and clouds, as depicted in this artist’s impression. NASA/JPL-Caltech/Wikimedia Commons

To search for alien life, astronomers will look for clues in the atmospheres of distant planets – and the James Webb Space Telescope just proved it’s possible to do so

Life on Earth has dramatically changed the chemistry of the planet. Astronomers will measure light that bounces off distant planets to look for similar clues that they host life.

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