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...children born per women in different countries of the world) will inevitably lead to a stabilisation in the total world population: if the average fertility rate is about two, and the proportion of women in the population is about a half (that is, 0.5), then the population will settle down to a relatively constant value... ...eventually... ...because as Hans Rosling...

...Researchers in Abu Dhabi are testing a pilot device that can store solar energy in sand to improve the efficiency of power plants and provide energy at night. The technology, developed at the Masdar Institute of Science and Technology, uses gravity to drain sand from a higher basin into a lower one, heating up the sand grains with solar power during the transition. In the...

...research into the heart problems in juvenile dementia, also called CLN3 - a rare disease. ...[Cardiac myocytes loaded with a fluorescent stain for lysosomes (red) and a dye measuring the intracellular calcium concentration (green)] Cardiac myocytes loaded with a fluorescent stain for lysosomes (red) and a dye measuring the intracellular calcium concentration (green). The...