Word: among
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Dates: during 1990-1999
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...able to take a cutting from your body and grow a new person, as if you were a willow tree. And if it becomes possible to screen or genetically engineer embryos to "improve" them, then in-vitro fertilization and cloning may become the rule rather than the exception among those who can afford...
...natural world is once again undergoing a sea change. We are not the first nor are we the only species to spread around the globe, but we are the first to do so as an integrated economic entity. Other species maintain tenuous genetic connections, but no direct ecological connections, among their far-flung members. We, in contrast, are exchanging more than $1 trillion of goods and services among ourselves globally every...
...spotty temperature records indicates that the world's average temperature has gone up about 0.5[degree]C (1[degree]F) in the past century, with the '90s being the hottest decade in recent history. This fact is quoted widely in the scientific community, although there are nagging doubts even among researchers. Recent satellite records, using different kinds of instrumentation, fail to show a warming trend...
Powell could scarcely have imagined that a century after his feat, more than 2 million tourists would visit the Grand Canyon annually--among them families with small children who would float down the once fearsome Colorado as a summer lark. During the past 30 years, annual visitation to the Grand Canyon has ballooned from 2 million to more than 5 million. If you want to paddle down the Grand Canyon on your own, without hiring a commercial outfitter, the waiting list for boating permits is now so long that you won't be able to launch your raft until...
...avert a disaster unparalleled in medical history. A concerted research effort was launched three years ago in the U.S., and hints of promising strategies are emerging from experiments in monkeys. But even if an AIDS vaccine is developed before 2025, it will require an extraordinary effort of political will among our leaders to get it to the people who need it most...