(Al Jazeera English News Headlines: April 15, 2010) Volcanic ash from an Icelandic volcano has grounded air traffic in northern Europe, including the UK. Kyrgyzstan’s ousted president Kurmanbek Bakiyev has reportedly left the country for neighboring Kazakhstan. Rescuers are working in remote areas in northwest China following a large earthquake; most victims of the quake were Tibetan. Two Palestinian men have been executed in Gaza for collaborating with Israel. The number of rapes in the Democratic Republic of Congo has risen sharply, based on a recent survey by Oxfam. In positive news, new cases of polio have decreased 75 percent this year worldwide.