اهلا بكم في قناة الطفل السعيد قناة الاطفال الاجمل على الاطلاق العاب فيديو العاب سيارات جميع الالعاب موجودة نتمنى مشاهدة ممتعة نتمنا ان تنال اعجابكم محتوا جميل جدا للاطفال افلام كرتون العاب فيديو العاب القط توم المتكلم توم صديقتي انجيلا توم وجيري ماشاولدب سندباد علي بابا قناة طيور الجنة مغامرات ...

To bee or not to bee, that is the question. What if bees just suddenly disappeared from the earth? Need a hint? A buzzword, pehaps? Chaos! It would be terrible! Some say that if bees just suddenly disappeared, mankind would be wiped out in 4 years... Watch more what-if scenarios: Planet ...

When stuck in water, bees create a wave and hydrofoil atop it, according to a new study. When a bee lands on water, the water sticks to its wings, robbing it of the ability to fly. However, that stickiness allows the bee to drag water, creating waves that propels it forward. Walking on ...

Dr. Laurance Doyle is an astrophysicist and principal investigator at SETI (Search for Extraterrestrial Intelligence) with expertise in diverse subjects including extrasolar planets, signal processing and communications theory. He has worked on image analysis from the Voyager mission and Halley's ...