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Announced in 2011 China has banned imports and sales of certain incandescent light bulbs since October 2012 to encourage the use of alternative lighting sources such as light-emitting diodes (LEDs), with a 5-year plan of phasing-out incandescent light bulbs over 100 watts starting 1 October 2012, and gradually extend the ban to those over 15 ...
The following year, a group of countries, including the United States, Canada, the Nordic Countries, and Switzerland, proposed a worldwide ban on "nonessential" uses of CFCs in spray cans. [ 35 ] Then, in 1985, British Antarctic Survey scientists Joe Farman , Brian Gardiner and Jon Shanklin published results of abnormally low ozone ...
A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. [2] The images may represent electrical waveforms on an oscilloscope , a frame of video on an analog television set (TV), digital raster graphics on a computer monitor , or ...
In the United Kingdom, "Ray of Light" debuted with 76,000 copies and peaked at number two on May 9, 1998, being held off from the number one spot by All Saints's "Under the Bridge / Lady Marmalade", which also debuted the same week with about 31,000 more copies than "Ray of Light.
3 January: A free online index with metadata about over 200 million scientific documents is launched, OpenAlex. [1]The graphs show one visualization of recent developments of science overall based on this data (fewer papers may not be associated with decreasing success, priority, impact or activity).
Almost 25% of women will have had an abortion by age 45, with 20% of 30 year olds having had one. [24] In 2019, 60% of women who had abortions were already mothers, and 50% already had two or more children. [25] [26] Increased access to birth control has been statistically linked to reductions in the abortion rate. [27] [28] [29]