“We’re at a turning point now, because we’re 50 to 70 years from when a lot of these highways were built,” says Ben Crowther, advocacy manager at the nonprofit America Walks. “They’re now at the end of their design life span. So we have to make the decision and reevaluate w...
After investigations by generations of scholars, the case of the prehistoric human adventure in the deserts of North America has emerged as a rich, if largely unresolved detective story, complete with abundant and often puzzling clues, no living witnesse
it was the bus driver who was the murderer. Another version of the legend has it that in a bus accident, the Boy Scouts were killed. But whatever the tales are, several witnesses have claimed to have seen ghostly lamps, shadows, and little handprints. ...
The number of cars in America is growing faster than the population. In two cities there are already more cars than families. Before the modern highways were built, America's railroads carried people and products across the country. Railroads played an exciting and colorful part in the growth o...
N.Y.—DorothyWoodruffandRosamondUnderwood—traveledto a settlementin the Rocky Mountainstoteachinaone-room schoolhouse. ThegirlshadgonetoSmithCollege.Theywore expensiveclothes.Soforthemto movetoElkhead,Colo.toinstructthechildrenwhoseshoes wereheldtogetherwithstring wasasurprise. Theirstayin Elkheadisthesubjec...
People must build many walls and nets to protect the two highways. Another challenge was the snow. Plenty of snow sometimes destroyed rocks and roads. As a result, the construction of the highways to Motuo was stopped several times. To solve this problem, people built a tunnel (隧道) that...
Highways were closed and couldn’t take off on time. The smoggy weather the country’s land from north to south, including Beijing, Hebei, Shandong, and 6 other provinces. People could only see clearly than 50 meters in some areas. Cities Shanghai and Nanjing have been covered by the gray...
Once the builder robot has released a layer of material, the scanner robot flies over and ___ the progress. The system then computes the next layer that the builder should make, while also correcting for any error that might have been discovered in what has already been built. These could...
Today marks the one-hundred year anniversary of the beginning of the battle of the Somme in France, during which eventually more than one million men were wounded or killed, making it one of the bloodiest battles in human history. But this was not a typically fitting bereavement or commemorati...
If a debacle on this scale is surprising today, it was all but unthinkable in 1952. TheCitywas among America’s premier trains, a luxury streamliner that could hit110 miles per hourwhile white-jacketed waiters balanced trays of cocktails. The “Overland Route...