Aficionados sniff at the quality of the frankincense farmed in India, preferring to pay more for product harvested in East Africa, said Bill Huf, manager of Scents Of The Earth in Cape May, N.

WSJ: A Shift for the Magi? Frankincense Shortage

University's Lamont-Doherty Earth Observatory in Palisades, N.

ENGADGET: NASA finds new evidence of ice in Mercury's polar craters

The Rio Earth Summit codified the U.N.

FORBES: Agenda 21: The U.N.'s Earth Summit Has Its Head In The Clouds

Sachs, director of the Earth Institute at Columbia University and a special advisor to U.N.

FORBES: Getting Beyond 'Stingy'

"With only a small variation in fertility, particularly in the more populous countries, the total could be higher: 10.6 billion people could be living on Earth by 2050 and more than 15 billion in 2100, " says the Population Division of the U.N.

CNN: U.N.: World can 'thrive' as population reaches 7 billion