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Jun 14, 2013
11:36 am
Population growth is projected to be highest in Africa, while UN projects world population will top out at 9.6 billion in 2050.
Jun 4, 2013
3:28 pm
North Stradbroke Island's Blue Lake appears to be in the same condition it was 7,500 years ago.
May 31, 2013
6:02 am
Many blame local guides for the influx of inexperienced climbers and the increased risk of death on the world's highest mountain.
May 14, 2013
6:12 am
Environmental watchdog Global Witness says Deutsche Bank and the World Bank didn't do their homework before investing in unlawful Vietnamese rubber companies.
May 12, 2013
6:01 am
With much of Gaza's farmland swallowed by Israel's buffer zone, experts say urban aquaponic farms can curb food insecurity in the cramped territory.
PHOTO GALLERY
May 10, 2013
2:58 pm
Carbon dioxide levels, one of the main culprits of global warming, have topped 400 parts per million.