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.
Guinness Railroad World Records LONGEST TRAIN: The longest and heaviest freight train on record was one about 4 miles in length consisting of 500 coal cars with three 3600 hp diesels pulling and three more in the middle, on the Iaegar, WV, to Portsmouth, OH stretch of 157 miles on the Norfolk & Western RR on Nov 15, 1967.