Greenland and Antarctica are home to most of the world's glacial ice – including its only two ice sheets – making them areas of particular interest to scientists. Combined, the two regions also contain enough ice, that if it...

Earth’s global sea levels are rising – and are doing so at an accelerating rate. Waters in the ocean are expanding as they absorb massive amounts of heat trapped by greenhouse gases in Earth’s atmosphere. Glaciers...

With extreme cold-weather gear, scientific instruments, and two tank-like snow machines called PistenBullys, they begin a traverse on Dec. 21 along section of the 88-degree south latitude line in an arc around the South Pole,...

A quick preview of the sights and sounds captured this summer as researchers ventured out on the Greenland Ice Sheet.<b<b<br/>r/>r/>

This program describes the major topographical features of Earth including mountains, plains, and plateaus. Footage from throughout North America takes students to the Rocky Mountains, the plains of Iowa, and the Colorado Plateau to...

In the past century, as the climate has warmed, sea level rise has accelerated. Scientists predict it will only increase, and they're studying changes in the ocean and land to better understand how and why the water is rising....

In this video, the teacher explains the concept of absolute value and how it relates to negative numbers. The teacher uses examples of distances, money, and temperature to illustrate the idea that as the value of a negative number...

In this video, the teacher explains the physics behind roller coasters and how engineers design and build them. Topics covered include gravitational potential energy, kinetic energy, conservation of energy, friction, acceleration, and...

This video lesson teaches students how to interpret absolute value in real-world situations using a number line. It explains that absolute value represents the distance from zero and not the size of the number.

Mr. Beat compares and contrasts Florida and Georgia, two quickly growing states in the American South.

Experience has no singular placement within an organization. Megan Burns, principal at Experience Enterprises, talks about how the experience function can operate most effectively within an organization.

New research has found that rising sea levels will be more of a threat to the world’s coastal cities than previously thought. <br/>

Galveston could sink 25 inches as sea-level rise combines with a continental sagging effect to cause increased coastal flooding.

With support from the National Science Foundation, Villanova University marine scientist Nathaniel Weston studies how both land use and climate change can impact habitat in tidal marshes, including how rising sea levels may affect...

In this video lesson we will discover what an integer is by definition, on a number line and in the real world. Students will understand that integers are positive numbers, negative numbers and zero using a visual image of integers on a...

The Peruvian Amazon jungle is one of the most biologically diverse areas on Earth. As a nation, Peru has the largest number of bird species in the world and the third-largest number of mammals; 44% of bird species and 63% of mammal...

It describes atmospheric pressure, its variation with altitude and ways of measuring it.

Sitting on the crest of the Sierra Nevada, Tioga Pass is a gateway to Yosemite's past. In 1880, a gold and silver rush erupted here, and miners flocked to Tioga Hill in droves.

Here's the story of the construction of the Panama Canal, which turns 100 this year.

Different combinations of metals produce different voltages and this depends on how strongly the metal could force its electrons to move across a cell. The electrochemical series is a list of metals and other substances arranged in rank...

Jim is an experienced scuba diver; he stops to adjust to the new pressure after every 28 and 5 tenths feet he has dived. Assuming he starts at sea level. write an integer to represent his altitude after he has stopped 3 times to adjust.

Our rocky planet Earth is wrapped up in a gaseous blanket, known as the atmosphere. It’s this atmosphere that we can thank for all the life on earth. In fact, it is the only planet in our solar system with an atmosphere that can sustain...

This video discusses the importance of the Sunderbans mangrove forests in Bangladesh, which act as a barrier between freshwater sources and the sea. However, deforestation for timber and rising sea levels are threatening the survival of...

Hurricane Katrina was historic, not just for size and strength but for way it hit the Mississippi Gulf Coast, and southeastern Louisiana. It led to death, destruction, displacement, and suffering, particularly in New Orleans. See the...