1 Plant/Animal Cell Model (interactive) 2  Pumping Heart Cells. 3  Apoptosis (video) 4  Cell Cycle (interactive) 5  Mitosis (interactive) 6  Meiosis (interactive)  Microscopy.
Amtrakâs Acela Express is currently the fastest train in the US, capable of a maximum speed of 150 mph (241 km/h) â although it typically travels at about half that speed. Depending on whose definition you go by, that may or may not qualify it as a high-speed train. Source: State of California (PDF) via Inhabitat.
The fastest passenger trains around the world. 21 April 2015 Last updated at 22:41 BST. A Japanese magnetic levitation train has broken the world speed record. In a test run near Mount Fuji, the train reached a top speed of 603km/h (374mph). However, Japan is not the only country to boast rail travel of such super speeds. The BBC takes a look at some of the fastest passenger trains around the world.