Word: young
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Dates: during 1990-1999
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Scientists are also focusing on the differences between two types of fat cells, known as brown and white. The former, active in young mammals (including humans), convert fat into heat rather than storing it. That's crucial in newborns, whose temperature-regulation systems aren't fully formed. As we age, the brown cells become inactive and the white, which convert dietary fat to body fat, take over. Several research teams have found that by reactivating the brown cells in an adult animal with medication, they can burn off fat dramatically. Now the doctors are looking for a genetic switch that...
More and more nations are establishing marine reserves, where sea creatures of all sorts and sizes can mate and bear their young free from the menace of man. Just as important, funds are being found for enforcement of limits, restrictions and bans. Personnel are being hired and trained; boats and planes are being deployed to monitor compliance...
...influential forester Aldo Leopold wrote, "I am glad I shall never be young without wild country to be young in. Of what avail are 40 freedoms without a blank spot on the map?" Fifty-four years later, it's not so easy to find wild country to be young in. For now, however, a few tracts of wilderness still endure. We should be grateful for this and appreciate them as long...
...epidemic continues to rage, however, in South America, Eastern Europe and sub-Saharan Africa. By the year 2025, AIDS will be by far the major killer of young Africans, decreasing life expectancy to as low as 40 years in some countries and singlehandedly erasing the public health gains of the past five decades...
...hope is that by the year 2025 I'll no longer be getting letters every week from young girls who hate themselves because of the way they look...