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Articles sur Oceans

Affichage de 221 à 240 de 692 articles

Tampa Bay’s sea grass meadows need sunlight to thrive. Algae blooms block that light and can be toxic to marine life. Joe Whalen Caulerpa/Tampa Bay Estuary Program via Unsplash

Water being pumped into Tampa Bay could cause a massive algae bloom, putting fragile manatee and fish habitats at risk

Harmful algae blooms are an increasing problem in Florida. Once nutrients are in the water to fuel them, little can be done to stop the growth, and the results can be devastating for marine life.
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Marine life is fleeing the equator to cooler waters. History tells us this could trigger a mass extinction event

Climate change has already made tropical oceans too hot for some marine species to survive. As they flee towards the poles, the implications for ecosystems and human livelihoods will be profound.
Jeremiah Kiarie rounds up tilapia at Green Algae Highland fish farm in central Kenya on April 29, 2017. Tony Karumba/AFP via Getty Images

Farming fish in fresh water is more affordable and sustainable than in the ocean

Aquaculture is a growing source of healthy protein for millions of people around the world, but there are big differences between farming fish on land and at sea.
Female elephant seals take seven-month feeding trips during which they balance danger, starvation and exhaustion. Dan Costa

Risk versus reward on the high seas – skinny elephant seals trade safety for sustenance

By measuring how and when elephant seals sleep, researchers were able to figure out how elephant seals change their risk-taking behavior as they gain weight.
In August 2019 in the port of Marseille. The docking of cruise ships intensifies air pollution. Christophe Simon/AFP

Is the Mediterranean Basin really a hotspot of environmental change?

The Mediterranean region, with its biodiversity, climate, demographics, and economic activities such as tourism, agriculture and fisheries, is particularly vulnerable to environmental risks.
Two people walk their bicycles along a flooded street on the waterfront of Fort Lauderdale, Fla., as Hurricane Irma passes through on Sept. 10, 2017. THE CANADIAN PRESS/Paul Chiasson

Why a net-zero future depends on the ocean’s ability to absorb carbon

Economic recovery and carbon neutrality are linked. Both depend on the ocean’s ability to continue to regulate climate.
The greenhouse effect and plate tectonics are essential for maintaining water on the Earth’s surface. NASA/Goddard Space Flight Center/Reto Stöckli

Why is the Earth blue?

The presence of water on the Earth’s surface is the result of a subtle balance between different mechanisms in the atmosphere and below the surface.

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