000			03429cam a2200397 i 4500
001			on1240575248
003			OCoLC
005			20211220075836.0
008			210615s2021 njuab b 001 0 eng
010			_a 2021028760
040			_aIEN/DLC _beng _erda _cDLC _dOCLCO _dOCLCF _dUKMGB _dHHO _dYDX _dNFG
015			_aGBC1E4204 _2bnb
016	7		_a020311232 _2Uk
020			_a9780691201627 _qhardcover
020			_a0691201625 _qhardcover
035			_a(OCoLC)1240575248
042			_apcc
043			_afd----- _aff-----
092			_a551.415 _bW725
049			_aNFGA
100	1		_aWilliams, M. A. J., _eauthor.
245	1	0	_aWhen the Sahara was green : _bhow our greatest desert came to be / _cMartin Williams.
264		1	_aPrinceton : _bPrinceton University Press, _c2021.
300			_axxvii, 222 pages : _bcolor illustrations, maps ; _c25 cm
336			_atext _btxt _2rdacontent
337			_aunmediated _bn _2rdamedia
338			_avolume _bnc _2rdacarrier
504			_aIncludes bibliographical references and indexes.
505	0		_aIntroduction -- The Green Sahara -- Origins -- Birth of the Sahara -- Hippo Hunters of the Sahara -- A Sea of Sand -- Through a Glass Darkly -- Water and Sand -- A Handful of Dust -- Wood-Smoke at Twilight -- The Sahara Today -- In the Land of Great Drought -- Human Impact on the Sahara -- Life in the Sahara: Adapting to Aridity -- Epilogue: Will the Sahara Become Green Once More?
520			_a"The little-known history of how the Sahara was transformed from a green and fertile land into the largest hot desert in the world. The Sahara is the largest hot desert in the world, equal in size to China or the United States. Yet, this arid expanse was once a verdant, pleasant land, fed by rivers and lakes. The Sahara sustained abundant plant and animal life, such as Nile perch, turtles, crocodiles, and hippos, and attracted prehistoric hunters and herders. What transformed this land of lakes into a sea of sands? When the Sahara Was Green describes the remarkable history of Earth's greatest desert-including why its climate changed, the impact this had on human populations, and how scientists uncovered the evidence for these extraordinary events.From the Sahara's origins as savanna woodland and grassland to its current arid incarnation, Martin Williams takes us on a vivid journey through time. He describes how the desert's ancient rocks were first fashioned, how dinosaurs roamed freely across the land, and how it was later covered in tall trees. Along the way, Williams addresses many questions: Why was the Sahara previously much wetter, and will it be so again? Did humans contribute to its desertification? What was the impact of extreme climatic episodes-such as prolonged droughts-upon the Sahara's geology, ecology, and inhabitants? Williams also shows how plants, animals, and humans have adapted to the Sahara and what lessons we might learn for living in harmony with the harshest, driest conditions in an ever-changing global environment.A valuable look at how an iconic region has changed over millions of years, When the Sahara Was Green reveals the desert's surprising past to reflect on its present, as well as its possible future"-- _cProvided by publisher.
650		0	_aClimatic changes _zSahara.
650		0	_aDesertification _zAfrica, North.
650		0	_aPaleoclimatology _zSahara.
651		0	_aSahara _xClimate _xHistory.
994			_aC0 _bNFG
999			_c339115 _d339115