explosion

US Democratic House Minority Leader Hakeem Jeffries said the threats were "yet another indication that the explosion of hateful extremism is out of control".

When Danni reached the 55th floor walking down the stairs, he heard an explosion.

Videos posted online on Wednesday afternoon showed plumes of black smoke rising from the sites of several explosions in Sanaa, and first responders searching through the rubble of damaged buildings.

Lower costs, greater freedom and an explosion of creative ideas have also helped change the game.

Each explosion sends clouds of white smoke billowing into a light rain and then up through the trees.