https://www.youtube.com/watch?v=02pWbr9bgbA
The social media site, Facebook, can be an effective tool for connecting with new and old friends. However, some users may find themselves spending quite a bit of time viewing Facebook and may inevitably begin comparing what's happening in their lives to the activities and accomplishments of their friends.
Five million public school students in Texas will begin using new social studies textbooks this fall based on state academic standards that barely address racial segregation. The state’s guidelines for teaching American history also do not mention the Ku Klux Klan or Jim Crow laws.
There are just over three trillion trees on Earth, according to a new assessment.
The figure is eight times as big as the previous best estimate, which counted perhaps 400 billion at most.
It has been produced by Thomas Crowther from Yale University, and colleagues, who combined a mass of ground survey data with satellite pictures.