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The new research suggests that leaf death could become a new factor in the predicted "tipping point" where tropical forests transition due to climate change and deforestation into savannah-like landscapes.

Tropical Forests Nearing Critical Temperatures Thresholds

Global warming is driving leafy tropical canopies close to temperatures where they can no longer transform sunlight and CO2 into energy, threatening total collapse if the thermometer keeps climbing, according to a study Thursday.
The lander was carried into space by a Soyuz rocket launched Friday in Russia's Far East

Russia's Luna-25 Probe Enters Moon Orbit

Moscow's Luna-25 lander was successfully placed in the Moon's orbit Wednesday, the first such Russian mission in almost 50 years, space agency Roscosmos announced.
Project leaders believe the Euclid space telescope's test images show it is capable of ultimately fulfilling its mission to shed more light on dark matter and dark energy

First Test Images From Euclid Space Telescope Unveiled

The Euclid space telescope, launched July 1 on a mission to shed more light on elusive dark matter and dark energy, has reached its destination orbit and on Monday its European operators revealed its first test images.
City planners need to ensure people have places to shelter in times of extreme heat, said the WHO's Maria Neira

Extreme Heat Straining Health Systems: WHO

The extreme heat in the northern hemisphere is putting an increasing strain on healthcare systems, hitting those least able to cope the hardest, the World Health Organization said Wednesday.
The way cities are built -- with too little greenery and too much concrete -- exacerbates heatwaves, with the so-called heat island effect

How Climate Change Fuels Extreme Heat

Heatwaves across Asia and beyond have already broken records this year, while the arrival of the El Nino climate phenomenon will mean even more extreme temperatures.
The US National Ignition Facility (NIF), the interior of which is seen here in July 2008, has reportedly achieved a fusion reaction that produces more energy than was put into it

Nuclear Fusion: Harnessing The Power Of The Stars

The announcement has the scientific community abuzz, as nuclear fusion is considered by some to be the energy of the future, particularly as it produces no greenhouse gases, leaves little waste and has no risk of nuclear accidents.

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