From Russian jet overflights to drone incursions, Moscow is testing NATO’s resolve and response times. AJ Defence Editor Alex Gatopoulos explains why the alliance is on alert. | Al Jazeera English

Nuclear Power: Ministry of Energy designates KenGen to set up & run first nuclear plant First facility to generate 2GW as Kenya enters nuclear era Kenya targets 10GW to drive industrial and economic growth KenGen and NUPEA sign framework for national nuclear readiness #CitizenExplainer | Citizen TV Kenya

In 1957, the United States conducted its first underground nuclear test, known as Rainier, at the Nevada Test Site. The device was detonated inside a carved tunnel deep within the rock, marking a major shift from open-air tests to underground experiments that produced far less radioactive fallout. The explosion created a powerful seismic wave that scientists used to study how nuclear blasts behave beneath the earth. via: NNSANevada yt | History In Pictures