Gary Gilligan sent in these links – a surprising view of the Sahara. Go to https://www.newscientist.com/article/2077342-secret-sahara-reveals-fairy… … and https://www.newscientist.com/article/dn27971-humans-accidentally-created… … https://www.newscientist.com/article/volcano-hunters-dig-into-the-sahara…
