Transportation and travel
The 2-ton, 11-foot high tower of glass was first installed in 1859 and still guides ships today.
Genetically modified super algae may be our ticket to the production of cost effective biofuels.
Now, how to convince commuters?
Economists find bikers, motorcyclists and pedestrians are most at risk.
Environmentally friendly additives to road salt may still have tradeoffs.
Atmospheric scientists find airplane takeoffs and landings can affect the weather near airports.
Census data suggests that seat belts may transform airbag-popping fat into life-saving cushion.