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It may be no accident that so many of the great scientists really have followed Galileo, in ducking and avoiding the consequences of what they discovered. In the roster of genius, evasion of worldly responsibility seems practically a fixed theme. Newton escaped the world through nuttiness, Darwin through elaborate evasive courtesies and by farming out the politics to Huxley. Heisenberg’s uncertainty was political—he did nuclear-fission research for Hitler—as well as quantum-mechanical. Science demands heroic minds, but not heroic morals. It’s one of the things that make it move. ♦

Newton's laws are astonishingly successful at describing the world. They explain why apples fall from trees and why the Earth orbits the Sun. But they have an odd feature: they work just as well backwards as forwards. If an egg can break, then Newton's laws say it can un-break.This is obviously wrong, but nearly every theory that physicists have discovered since Newton has the same problem. The laws of physics simply don't care whether time runs forwards or backwards, any more than they care about whether you're left-handed or right-handed.But we certainly do. In our experience, time has an arrow, always pointing into the future. "You might mix up east and west, but you would not mix up yesterday and tomorrow," says Sean Carroll, a physicist at the California Institute of Technology in Pasadena. "But the fundamental laws of physics don't distinguish between past and future."

There are approximately seven billion inhabitants of earth. They conduct their lives in one or several of about seven thousand languages—multilingualism is a global norm. Linguists acknowledge that the data are inexact, but by the end of this century perhaps as many as fifty per cent of the world’s languages will, at best, exist only in archives and on recordings. According to the calculations of the Catalogue of Endangered Languages (ELCat)—a joint effort of linguists at the University of Hawaii, Manoa, and at the University of Eastern Michigan—nearly thirty language families have disappeared since 1960. If the historical rate of loss is averaged, a language dies about every four months.

The Forum @ CERN: A Leap of Faith: Finding Common Ground Between Science and Theology. Promoting a dialogue between science and religion has long been a challenging task- the two communities of thought often seem far apart. The Forum explores the challenge in a discussion recorded at CERN in Switzerland and asks not only why this dialogue is important but how it is working and where it might lead. CERN is the European Organization for Nuclear Research where physicists and engineers are probing the fundamental structure of the universeWith Bridget Kendall to discuss common ground between science and religion are:Professor Rolf-Dieter Heuer, a German particle physicist and the Director General of the European Organization of Nuclear Research, or CERN, since 2009.Marcelo Gleiser, Professor of physics and astronomy at Dartmouth College who specialises in cosmology, nonlinear physics and astrobiology. Dr. Kusum Jain, a renowned Indian scholar of Jain Philosophy and Director of the Centre of Advanced Study in Philosophy at the University of Rajasthan, Jaipur. She has published extensively on such topics as human rights, the roots of terrorism, and bio-ethics.Monsignor Tomasz Trafny, Head of Science and Faith, Vatican City State.And there is poetry, especially written for the programme, by British poet Murray Lachlan Young.

Fact can be stranger than fiction. This is especially true of black holes, as Prof Stephen Hawking explains.For instance as soon as you entered the black hole, reality would split in two. "In one, you would be instantly incinerated, and in the other you would plunge on into the black hole utterly unharmed," as we have previously explored.In the 2016 Reith lectures broadcast on BBC Radio 4, Prof Hawking further examines and challenges the latest scientific thinking about black holes.