Hollow graphene aerogel fibers mimicking polar bear hair achieve record-low thermal conductivity and high electrical ...

The roots of Russia's invasion of Ukraine go back decades and run deep. The current conflict is more than one country fighting to take over another; it is — in the words of one U.S. official — a shift ...

Introduction Common mental health outcomes among children in conflict with the law in correctional facilities in Africa are an under-researched area with significant public health implications. This ...