The Earth is 4.54 billion years old; 3.8 billion years ago, the very first life form came into existence; 225 million years ago, dinosaurs came on the scene; and man took his first steps in Africa 200,000 years ago. How do we know this to be true? Science. Carbon-14 and other radioisotopes are used to measure the age of fossils, rocks, and other materials that make up Earth's geologic history.
"Civil Rights Activist Amelia Boynton Robinson, 1927. Her history of activism began at age 9 handing out leaflets for Women's Suffrage. A photo of her and another protester beaten unconscious in the street on Bloody Sunday circulated globally, calling attention to protests in Alabama. Ran for Congress from Alabama in 1964, the 1st female African-American ever to do so the 1st female of any race to run for the ticket of the Democratic Party in Alabama. As of today she is 101 years old."
'We Are All Connected' was made from sampling Carl Sagan's Cosmos, The History Channel's Universe series, Richard Feynman's 1983 interviews, Neil deGrasse Tyson's cosmic sermon, and Bill Nye's Eyes of Nye Series, plus added visuals from The Elegant Universe (NOVA), Stephen Hawking's Universe, Cosmos, the Powers of 10, and more. It is a tribute to great minds of science, intended to spread scientific knowledge and philosophy through the medium of music. #Science #Carl_Sagan #symphonyofscience
Awareness on Soil Erosion by timepass.info: A great experiment to illustrate soil erosion! This simple experiment shows the importance of trees as a part of our environment. The water that runs through soil with vegetation (left corner), comes out clear, while the other two without vegetation is muddy. #Science #Soil_Erosion