New Delhi, April 22: As we celebrate the 45th Earth Day on Wednesday, Google has come up with an interactive doodle (Earth Day quiz 2015) on its homepage. The second ‘O' in Google is replaced by planet earth which keeps on spinning.
The Google Doodle also lets you take a fascinating Earth Day quiz 'Which animal are you?'
"Clicking on this year's Earth Day logo (or searching for "Earth Day quiz") presents one of the Internet's favorite pastimes: a totally scientific and 1,000% accurate personality quiz. Take the time to answer a few questions to determine and share your Earth Day animal.
And, of course, you're only a search away from learning more about nature's precious pals and interesting inhabitants (fyi: kakapo is the heaviest parrot)," says a note shared by the Earth Day doodle crew.
Earth Day is an annual event, celebrated on April 22, on which events are held worldwide to demonstrate support for environmental protection. It was first celebrated in 1970, and is now celebrated in more than 192 countries each year.
NASA celebrates Earth's splendid beauty
Celebrating the Earth Day, NASA has released some of the most gorgeous images and a stunning video of planet Earth as captured from the International Space Station (ISS).
As part of its Earth Day programme, the US space agency is asking people for videos, messages, Instagram pictures celebrating our world, with the hashtag #NoPlaceLikeHome.
In the image gallery celebrating Earth Day, you can see a composite image of southern Africa and the surrounding oceans to the tropical cyclone Joalane seen over the Indian Ocean.
On April 5 this year, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite acquired a natural-colour image of sea ice off the coast of East Antarctica's Princess Astrid Coast.
NASA's Terra satellite also captured the March 20 solar eclipse's shadow over clouds in the Arctic Ocean.
From the ISS, Expedition 42 Flight Engineer Barry Wilmore took a photograph of the Great Lakes and central US on December 7 last year and posted it on social media.
The NASA video features dramatic visual comparisons of parts of the Earth most severely impacted by climate change, including the Aral sea visibly shrinking between 2000 and 2014.
It also features photographs of areas impacted by extreme weather, such as partially submerged islands in Bermuda.
"Every day of every year, NASA satellites provide useful data about our home planet, and along the way, some beautiful images as well," NASA posted in the video.
The clip was released on the "Earth Day" as NASA plans to focus attention on "exploring" our home planet -- the most "complex" of the 1,800 planets discovered in our cosmos so far.
It is this complexity that challenges the Earth scientists as they seek to figure out how the whole planet works as a system.
"Earth has oceans, forests, deserts, ice sheets, rain, snow, an atmosphere. And we have life. These are some of the things that NASA's 20 Earth-orbiting missions observe and measure in our quest to build the most complete understanding possible of our dynamic planet," the US space agency said.
The space agency has a Facebook page dedicated to the #NoPlaceLikeHome project and also provides full coverage on its redesigned web site.
(With inputs from agencies)