An assembly of the UN Environment Programme (UNEP) opened in Kenya's capital with a minute’s silence as delegates stood under the dark cloud cast by a plane crash that killed 157 people, including UN staff working for several different agencies. Through the week, as the identities of more victims were reported, heartache rippled through the conference halls. Students at Kenyatta University mourned the deaths of a lecturer and the director of teacher professional development. Hundreds of lives will not be the same as they mourn. Meanwhile Boeing faces further questions over the safety of its 737 Max 8 jets, now grounded after the second fatal crash in months. See