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Since summer 2013, starfish along both coasts of the United States have been dying in large numbers—and not gracefully. As their tissues collapse, the starfish (also called sea stars) start to look stretched and...
Drilling near the North Pole, Dr. Jan Backman reveals a brief moment in time...
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The Kemp’s ridley is a “riddler” among sea turtles . Although the species was...
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It’s hard not to identify with penguins as they waddle about upright on land,...

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Remember playing Tetris? Originally developed in 1984, the video game in which blocks of various shapes rain down and the player needs to find a way to fit them together is now ubiquitous. This TED ED video compares Tetris blocks...
Compare the healthy coral on the left with the bleached coral on the right...
How will changes in temperature affect glaciers and ice sheets? Dr. Sarah...

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Today, carbon dioxide (CO2) levels in our atmosphere are the highest they've been in 15 million years. It's the cumulative...
How do plants respond to rising CO2 levels? To find out, plant physiologist Bert Drake at SERC exposed marsh plants near the Chesapeake Bay to CO2 levels expected in 50 and 100 years. Different...
This foraminifera was collected as it floated about 3 meters below the surface off the coast of Puerto Rico. The central dark area is the shell surrounded by spines. The tiny yellow dots are...
At a recent staff meeting a Smithsonian colleague mentioned that one of his pastimes this summer has been keeping tabs on the Arctic sea ice. The question that's on many Arctic-watchers' minds is...
Newly established black mangrove ( Avicennia germinans ) in a field of salt marsh ( Spartina alterniflora and Batis maritima ) in the Guana Tolomato Matanzas National Estuarine Research Reserve in...
Globotruncana falsostuarti -- a foram that lived about 75 million years ago, during the Cretaceous Period, from southeastern Tanzania. By measuring the chemistry in the shell, scientists can estimate...
Swimmers brave the waters in the shadow of a coal-fired power plant. Coal plants like this one emit CO2 into our atmosphere which is warming the planet and altering the chemistry of the ocean. Learn...
Scientists document a direct relationship between the extent of sea ice and polar bear survival. Future projected reductions in the extent of annual sea-ice due to global warming may result in the...
Sea ice is typically viewed as the domain of physical and natural scientists, the oceanographers, marine biologists, climate modelers, and navigators of the world. It is easy to forget another...
Chapter 3: Fragile Fauna Jelly Critters Grade Level: 5-6 Focus: Life Science- Gelatinous zooplankton in the Canada Basin Description: In this activity, students will be able to compare and contrast...
Global climate change is a complex issue. Think you're in the know about the ins and outs of this critical environmental issue? Test your knowledge in this quiz from National Geographic. More about...
Tiny plant-like organisms called zooxanthellae live in the tissues of many animals, including some corals , anemones, and jellyfish , sponges, flatworms, mollusks and foraminifera . These microscopic...
It’s confirmed: both Antarctica and Greenland are losing ice —around 350 billion tons each year—and, as a result, sea level has risen 11.1 millimeters worldwide since 1992. This photo shows a...
Will sea level rise affect your home? Your street? Your neighborhood? Your city? This illustration, made by the non-profit Architecture 2030, shows what Boston would look like if sea level rises by 3...
by Hannah Waters To really see a glacier move, you first have to speed up the passage of time. What appears to be an unmoving frozen expanse, as solid as the ground beneath your feet, is in fact a...
What is climate change, and how is it affecting coastal Carolina? That is the question that a group teens from Isaac Bear Early College High School set out to answer for their Third National Student...
How will changes in temperature affect glaciers and ice sheets? Dr. Sarah Das from the Woods Hole Oceanographic Institution explores this phenomenon first hand in Greenland, where she studies how the...
Earth as seen from a satellite. More about climate change can be found in our climate change featured story .
From left to right, Dr. Ian MacDonald, Dr. Russ Hopcroft, Dr. Kathleen Crane, and Dr. Mike Vecchione , members of the 2002 Hidden Ocean Arctic expedition. Part of their mission – to reconstruct the...
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