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Related: Earth Sciences11 Meaningful Earth Day Activities for Every Grade Level Our students are the future caretakers of our Earth. These fun Earth Day activities help empower kids to have a positive impact on the planet. From recycled art projects to farming simulations, here’s how to roll out the green carpet in your classroom on Earth Day this year. 1. Engineering for Good (6–8) Your middle schoolers know that drinking plenty of H2O is good for them, but they may not realize the impact all those plastic water bottles have on the environment.
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Abrupt glacier melt causes Canadian river to vanish in four days Updated A vast glacier-fed river which flowed from Canada's Yukon territory across Alaska to drain into the Bering Sea has disappeared in just four days, in what scientists believe is the first observed case of "river piracy". High average temperatures in the first three months of 2016 caused a dramatic spike in the amount of meltwater flowing from the Kaskawulsh glacier, carving a deep canyon in the ice and redirecting the flow toward the Alsek River in the south, rather than the north-flowing Slims River. That changed the Slims River from a three-metre-deep, raging torrent to a place where "massive afternoon dust storms occurred almost daily", according to a scientific paper published in the journal Nature Geoscience. "We were really surprised when we got there and there was basically no water in the river," lead author Daniel Shugar said of the Slims River. "We could walk across it and we wouldn't get our shirts wet."
Two Superpowers We Wish We Had At some point today, you’ll probably do one or all of these things: Flip a switch for light. Take fresh food from a refrigerator. Turn a dial to make your home warmer or cooler. Press a button on your laptop to go online.
Annual Report 2014 Jan 2014 11-18 january 2014 Grüne Woche and GFFA in Berlin What the World Would Look Like if All the Ice Melted This story appears in the September 2013 issue of National Geographic magazine. The maps here show the world as it is now, with only one difference: All the ice on land has melted and drained into the sea, raising it 216 feet and creating new shorelines for our continents and inland seas. There are more than five million cubic miles of ice on Earth, and some scientists say it would take more than 5,000 years to melt it all. If we continue adding carbon to the atmosphere, we’ll very likely create an ice-free planet, with an average temperature of perhaps 80 degrees Fahrenheit instead of the current 58. North America What the World Will Look Like 4°C Warmer Micronesia is gone – sunk beneath the waves. Pakistan and South India have been abandoned. And Europe is slowly turning into a desert. This is the world, 4°C warmer than it is now. But there is also good news: Western Antarctica is no longer icy and uninhabitable. Smart cities thrive in newly green and pleasant lands.
Volcanoes: How often do they erupt and what happens when they do? - Science News - ABC News Planet Earth is covered in hundreds of volcanoes, many of which will be erupting at any one time. Many of us only notice volcanoes when they are about to explode or disrupt our travel plans, but these spectacular forces of nature can have a significant impact on people living in the local area. While volcanoes can be destructive, they are also responsible for creating rich agricultural soil, minerals like gold and silver, diamonds, hot springs and geothermal energy. So how do these iconic wonders form, and what risks do they really pose? What Causes Ocean Currents? The systems of ocean surface currents and deep water currents are, as expected, connected, but the locations of the physical connections are limited to three areas (one per main ocean), and are all on the Northern Hemisphere. The downwelling occurs on the Northern Atlantic, while the upwelling occurs on the Northern Pacific and the Northern Indian Ocean, as shown on the side map. The extents of the continental shelf block, or at least seriously limit, the movement of the ocean currents. To see a 3D view of the Conveyor Belt enlarge the diagram below. 1. Due to the friction between air and water, winds create surface currents that carry water masses from the equatorial areas toward northern (and southern) polar zones.