I made this bow and arrow using only primitive tools and materials.The bow is 1.25 m (55 inches) long and shoots 60 cm (2 feet) long arrows. I don't know the draw weight - safe to say greater than 15 kg... continue reading
posted by Mordhaus 8 years 1 month 1 week ago • 621 views • 5:54Videos (23) | Sift Talk (0) | Blogs (0) | Comments (1000) |
YouTube: Today on SciShow News we talk about a new research effort that is aiming to revolutionize how we treat disease. We also discuss the video where Boston Dynamics shows off it's new version of the... continue reading
posted by PlayhousePals 8 years 2 months 1 week ago • 76 views • 4:35YouTube: Americans remain very overweight. According to the CDC, about 38% were obese in 2014, meaning that they had a body mass index of at least 30, compared to 32% just a decade ago. This is in spite... continue reading
posted by PlayhousePals 8 years 3 months 2 weeks ago • 13 views • 6:01