The Known Unknowns Rebecca York Helpless though we may feel

Helpless though we may feel today

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Is Gareth Southgate your ultimate hero in football

move away and forget

The Known Unknowns Rebecca York Helpless though we may feelAbout The Known Unknowns by Lawrence M. Krauss Our understanding of ourselves and the cosmos has advanced immeasurably over the last five hundred years of modern science, yet many fundamental mysteries of existence persist. How did our Universe begin, if it even had a beginning? How big is it? What's at the bottom of a black hole? How did life on Earth arise? Are we alone? Is time travel possible? These mysteries define the threshold of the unknown.