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Rudy Giuliani's rhetorical questions got the delegates vocally into the act and, by the climax of his speech, they were all on their feet and roaring — making the sports arena feel like a coliseum.

Tucson, Ariz., is probably the best urban area in the country for viewing the stars. Tucson's clear, cloudless skies attract all sorts of astronomy buffs, professional and amateur. NPR's Peter Breslow takes a look at the astronomy culture of the region.

Brian Castner commanded two Explosive Ordnance Disposal units in Iraq, where his team disabled roadside IEDs and investigated the aftermath of roadside car bombings. He returned home a completely different man, which he details in his memoir, The Long Walk.

Brian Castner commanded two Explosive Ordnance Disposal units in Iraq, where his team disabled roadside IEDs and investigated the aftermath of roadside car bombings. He returned home a completely different man, which he details in his memoir, The Long Walk.

Trugoy brought skill and care-free charisma to De La Soul's innovative music, which helped to usher in a new age of hip-hop. After years of legal disputes, that music will soon be available again.

Already deadly, Sandy has caused multiple deaths and left millions without power. Now the hurricane-turned-superstorm is spreading over much of New York State as it heads toward Ontario, Quebec and northern New England.

One of the main threats to the endangered North Atlantic right whale is lobster-fishing rope. A new ropeless technology could save both the whales and the lobster industry.

The dinosaur named Llukalkan aliocranianus was a predator with a menacing appearance and the ability to strike fear in its prey. Paleontologists said it roamed the Earth nearly 80 million years ago.

On both the East and West coasts, whales are at risk of being entangled and injured by ropes used by fishermen. Fishing grounds are being closed, but new technology could help avoid that.

The good news: Sea level has risen by just a half-inch in the past 20 years as a result of shrinking ice. The bad news: The melting is now speeding up. Over the next century, this could contribute to another 2- to 3-foot rise in sea level — enough to flood New York City every few years.