: Forty-four years after the earliest cases of AIDS were identified, the historian Marion Aballéa retraces the social, economic, cultural, scientific and public health history of the first pandemic linked to
: On 14 September, 2015, the international LIGO/Virgo collaboration detected the very first gravitational wave signal, a tiny distortion of spacetime predicted by Einstein, in this case produced by the merger of two black holes. The CNRS astrophysicist Marie-Anne Bizouard explains how this discovery has opened up a new window on the