Investigators are combing through debris at the site where Ethiopian Airlines Flight 302 crashed on Sunday, attempting to make sense of a disaster that claimed 157 lives and left thousands more in grief and shock.

In the days since the crash, the personal stories of many of those on board have come to light — highlighting the truly international nature of a tragedy that saw people of 35 different nationalities die.
The focus on Boeing has also been intense. On Tuesday, the UK joined several other countries in grounding the company’s newest, big-selling 737 MAX 8 jet over safety concerns. The MAX 8 was also the model involved in October’s Lion Air crash, which killed all 189 people on board.
But much more about Sunday’s crash remains unclear — including crucial questions over what caused the jet to go down.