Science, Volume 333, Issues 6039-6044John Michels (Journalist) American Association for the Advancement of Science, 2011 |
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Page 540
... billion people has dropped to 13 years . World population could reach 9.3 billion by 2050 , according to U.N. projections . U.N. Population Projections , 1950-2100 High - fertility variant , 2.5 children Medium - fertility variant ...
... billion people has dropped to 13 years . World population could reach 9.3 billion by 2050 , according to U.N. projections . U.N. Population Projections , 1950-2100 High - fertility variant , 2.5 children Medium - fertility variant ...
Page 562
... billion until around 1800 , and it took another century and a quarter to reach 2 bil- lion . But the world is currently in the midst of a period of substantially faster population growth , increasing from 3 to 7 billion within the space ...
... billion until around 1800 , and it took another century and a quarter to reach 2 bil- lion . But the world is currently in the midst of a period of substantially faster population growth , increasing from 3 to 7 billion within the space ...
Page 810
... billion less for discretionary programs in 2012 than in 2011 ( 1 and 2 ) , although the House voted previously to spend $ 31 billion less next year . It also dictates the split between overall defense and domestic spending levels ...
... billion less for discretionary programs in 2012 than in 2011 ( 1 and 2 ) , although the House voted previously to spend $ 31 billion less next year . It also dictates the split between overall defense and domestic spending levels ...
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AAAS activity alleles analysis Astron Astrophys Atgl atoms autophagy behavior billion Biol Biology black holes cachexia cancer carbon cells Center Chem complex components coral countries decline demographic demographic dividend disease E-mail Earth Planet eclogitic ecosystem effects electron energy etoposide fertility frequency function funding galaxies Galaxy Zoo gene genetic genome global growth host HSCs human increase indicate Institute interactions Lett levels males MeCP2 ment mice molecular molecules MreB mutations National neurons observed OPTN parasites pericytes peridotitic Phys population potential preschool projections protein q-TO Rab1 reef References and Notes regions samples says scale Science scientists spatial species stars strains structure supermassive black holes Supporting Online Material table S1 TBK1 Technology temperature Thy1 tion topological defects transition ubiquitin Univ University youth bulge zeolite