If we choose not to reduce emissions of heat - trapping gases and instead continue to rely upon fossil fuels, the average American could expect to see about 17 dangerously
humid days in a
typical summer in 2050 and about 35 in 2090.
a: arrows point to one of several thin, orange pumice lapilli lenses
typical of those found throughout the MV - 7 stratum containing the archaeological horizons; b: ventral side of a percussion flaked tool embedded in a 2 cm thick tephra lens located on an uneroded, elevated surface between narrow drainage channels in stratum MV - 7, Unit 56 (see Fig 6b for a close - up of the dorsal side of the flake); c:
typical micro-setting where thin orange lenses form during the
summer months in shallow
humid grassy areas at Monte Verde.