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 Budd Metroliner was a class of American electric multiple unit railcar designed for first-class, high-speed service between New York City and Washington, D.C. on the Northeast Corridor. They were designed for operation up to 150 mph - what would have been the first high speed rail service in the Western Hemisphere. Although 164 mph was reached during test runs, track conditions and electrical issues limited top speeds to between 100 mph and 120 mph in revenue service. The single-ended units