Tag «environmental science»

Green energy || Renewable Energy || Air Pollution

Green energy || Renewable Energy || Air Pollution

hello friends in this video i would like to talk about alternative source of energy fortunately there are several important sources of energy are available to us some renewable some long lasting most free from carbon dioxide production and some totally unexplored by us at present some of the alternative sources of energy which are …

The Great Acceleration

The Great Acceleration

Hi, this is Alex, from MinuteEarth, and this is the so-called “hockey stick graph”. You’ve probably seen it before, because Earth’s temperature has risen so fast over the last few decades that it looks kind of like a hockey stick. Except, a hockey stick is also a graph of the amount of plastic we make …

How Tall Can Mountains Be?

How Tall Can Mountains Be?

Olympus Mons, the tallest mountain in our Solar System, towers 21,000 meters above the surface of Mars — nearly two and a half times the height of Mount Everest. On Earth, you would need a spacesuit to survive at that altitude – but could there even be a mountain that tall here on our home …

The iPhone: A Model for Fighting Climate Change?

The iPhone: A Model for Fighting Climate Change?

Hi, this is Alex, from MinuteEarth. Back in the early 2000s, lots of people couldn’t have imagined life without alarm clocks, CD players, calendars, cameras, or lots of other devices. But along came the iPhone and other smartphones, and they took over the functions of dozens of things we used to think were essential. The …

A Pollution Problem in Rivers and Streams?

A Pollution Problem in Rivers and Streams?

[MUSIC PLAYING] One of the most important issues in environmental science is species extinction. A major reason for species extinction is the introduction of species to locations where they didn’t used to be. Introduced, or alien species, is the term for those species living outside of their typical geographic range. The global travel by people …

Ship Tracks Reveal Pollution

Ship Tracks Reveal Pollution

[chimes] [music] The Earth is a bright planet. From space, we can see why…more than half of our world is covered with clouds at any one time. Those white clouds reflect a lot of sunlight back to space, helping to keep our planet relatively cool. But a NASA satellite instrument called MODIS is showing us …