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.
Among the fastest TGV trains are TGV RÃ©seau and TGV Duplex- their top speed is 320 km/h (199 mph). The trains hold the worldâs highest average speed for a regular passenger service. In 2007 SNCF, the TGV operator, and Alstom, the TGV builder, carried out a series of high speed trials.