Marajó Island in northern Brazil


Today’s Video of the Day comes from the European Space Agency (ESA) and features a look at the island of Marajó in northern Brazil.

The western and northwestern border of Marajó are marked by the mouth of the Amazon River, while the Atlantic Ocean forms its northeastern border and the Pará River marks its eastern border.

Popcorn clouds can be seen in the upper portion of the image, which form after water vapor is released from plants and trees during the daytime.

These images were captured by the Copernicus Sentinel-2A satellite.

By Rory Arnold, Earth.com Staff Writer

Video Credit: European Space Agency

Changing land cover across the globe


Today’s Video of the Day comes from the European Space Agency (ESA) and features a look at how land cover is changing across planet Earth.

Land cover maps created by satellite data are important for monitoring changes in land use, protecting biodiversity, tracking climate change, and conserving natural resources.

In addition, land cover impacts carbon and nutrient cycles, biophysical properties, and feedback to atmospheric processes and the water cycle.

By Rory Arnold, Earth.com Staff Writer

Video Credit: ESA/CCI Land Cover Team/Planetary Visions

Why the hole in the ozone layer is largest during winter


Today’s Video of the Day comes from NASA Goddard and features a look at why the hole in the Earth’s ozone layer is at its largest during the winter.

Ozone depletion happens at a faster rate when temperatures are cooler, which is why the ozone hole typically hits its annual maximum size during the southern hemisphere’s winter.

Luckily, when the ozone hole reached its yearly maximum on September 11, 2017, it was the smallest maximum since 1988.

By Rory Arnold, Earth.com Staff Writer

Video Credit: NASA Goddard

A closer look at the rare snow in the Sahara Desert


Today’s Video of the Day comes from the European Space Agency (ESA) and features a look at the recent rare snowfall in the Sahara Desert.

These images were captured by the Copernicus Sentinel-2 mission and provide an overhead look at the snow in northwest Algeria.

Even though the Sahara can at times be one of the hottest places on Earth and is known for its extremely dry air, up to 40 centimeters of snow managed to accumulate in some parts.

By Rory Arnold, Earth.com Staff Writer

Video Credit: European Space Agency

Tracking salt, dust, and smoke aerosols in the atmosphere


Today’s Video of the Day comes from NASA Goddard and reveals how scientists track aerosols in the atmosphere traveling across the globe.

In this animation, researchers focused on salt, dust, and sea salt aerosols being transported across the planet, illustrating weather patterns from last year.

Hurricanes Harvey, Irma, and Jose are detected as sea salt particles are picked up over the ocean and concentrated into the spiraling shape of the storm.

By Rory Arnold, Earth.com Staff Writer

Video Credit: NASA Goddard

How Earth’s oceans and atmosphere impact each other


Today’s Video of the Day comes from the European Space Agency (ESA) and features a look at how the Earth’s oceans and atmosphere are interlocked, exchanging heat, moisture, and energy.

When the temperature of the ocean changes, it alters the circulation of the atmosphere and impacts climate and weather patterns.

Meanwhile, the atmosphere also impacts oceans and drives circulation, which in turn affects the climate.

By Rory Arnold, Earth.com Staff Writer

Video Credit: European Space Agency

New threats to the ozone layer


Today’s Video of the Day comes from NASA Goddard and features a look at some of the newer threats to Earth’s ozone layer.

According to a recent NASA report, stratospheric ozone could be significantly affected by both climate change and the continued release of banned chemicals.

Although the ozone layer has shown solid recovery progress following the Montreal Protocol, which banned chemicals that destroy ozone, some industrial compounds that are still legal can also eat away at ozone.

By Rory Arnold, Earth.com Staff Writer

Video Credit: NASA Goddard

Reindeer Island in Canada


Today’s Video of the Day comes from the European Space Agency (ESA) and features a look at Reindeer Island in Canada.

Reindeer Island can be found in the north basin of Lake Winnipeg in the province of Manitoba, located just 81 miles southeast of Grand Rapids.

These images were captured by the Copernicus Sentinel 2-A satellite.

By Rory Arnold, Earth.com Staff Writer

Video Credit: European Space Agency

Turtles on treadmills: Hatchlings show surprising endurance


Today’s Video of the Day comes from Florida Atlantic University and shows how researchers tested the swimming endurance of sea turtle hatchlings after they had walked long distances.

Sea turtle hatchlings are born in a nest on land, and then crawl into the ocean in the first 24 hours of their life. The turtles have an innate instinct to crawl toward the brightest, closest horizon and away from dark silhouettes.

But noisy city sounds and bright lighting can disorient the turtles, making their journey to sea much longer. Scientists set out to determine if the longer travel time impacted their ability to swim.

However, it turned out that the turtles have an incredible ability to sustain crawling and swimming endurance for exceptionally long periods of time.

By Rory Arnold, Earth.com Staff Writer

Video Credit: Florida Atlantic University

Oceans help remove carbon dioxide from the atmosphere


Today’s Video of the Day comes from the European Space Agency (ESA) and features a look at how oceans assist in the removal of carbon dioxide from the atmosphere.

Phytoplankton in the water absorbs carbon dioxide through the process of photosynthesis. When this occurs, the phytoplankton’s chlorophyll alters the color of the ocean water, which allows satellites to detect and measure how much carbon dioxide is being absorbed or emitted.

By Rory Arnold, Earth.com Staff Writer

Video Credit: European Space Agency

Aerial footage of bowhead whales in the Canadian Arctic


Today’s Video of the Day comes from the University of British Columbia and features aerial drone footage of bowhead whales in the Canadian Arctic.

Researchers found that these bowhead whales return to Cumerland Sound in Nunavut each year. They roll on their sides against the large rocks close to shore and lift their tails into the air.

The drone footage revealed large pieces of dead skin peeling away from the whales’ bodies, revealing that they used the rocks to exfoliate.

By Rory Arnold, Earth.com Staff Writer

Video Credit: VDOS Global LLC, UBC

The Sierra Madera impact crater in western Texas


Today’s Video of the Day comes from the European Space Agency’s Earth from Space series and features a look at the Sierra Madera impact crater in western Texas.

While most of the area appears relatively colorless due to sparse vegetation, agricultural circles can be seen thriving thanks to central pivot irrigation systems.

These images were captured the Sentinel-2 satellite, the color vision satellite mission for Europe’s Copernicus environmental monitoring program.

By Rory Arnold, Earth.com Staff Writer

Video Credit: European Space Agency