Photographs are not just keepsakes. Images from outer space help us keep track of planet Earth and its resources...
Climate change is caused by humans emitting polluting gases. Carbon dioxide (CO2) is one of the most important and...
At the eastern side of the Atlantic and Pacific Oceans, Earth’s rotation combined with winds blowing toward the equator...
Our world contains many ecosystems, from tropical forests to coral reefs to urban parks. Ecosystems help us in...
Although we always associate the oceans to the blue color, other colors such as green, brown, and even yellowish can be...
Life on Earth is diverse at many levels, meaning there is a lot of variety within species and there are many different...
You may have heard that our oceans are under threat due to the impacts of climate change, plastic pollution, and ocean...
Greenhouse gases (GHGs) help to maintain the Earth’s temperature by trapping heat. Without GHGs, our planet would be so...
During the past several decades, our planet has warmed because people have added a lot of greenhouse gases to the...
In Katmai National Park, Alaska, USA, we have seen changes in the number of brown bears and sea otters. The number of...
We are surrounded by high-tech materials in our daily lives; for example, in our smart phones or computers. Modern...
Trees make our cities and urban areas more livable. Trees provide many benefits, known as ecosystem services, to...
