Women around the world where there is zika and what an effective safe vaccine would mean in terms of stopping the spread of zika also peace of mind. Thank you, john. We have a lot more information about zika on our website. Go to cbsnews. Com zika. Terrorism is not suspected but we dont know yet what caused a crash landing to day in dubai. An Emirates Airlines jet burst into flames after hitting the runway. But everyone got out alive, the boeing 777 was arriving from southern india. Elizabeth palmer is following this. Reporter skidding down the runway on its belly. The first video of emirates 521 shows it billowing smoke. Minutes later, it exploeded. Ooh. Reporter just before that explosion smartphone video inside the cabin shows alarm, but no panic. Some people even take down their suitcases. But, 60 second later the cabin crew is sounding desperate. Leave the luggage she is shouting. Jump. Jump. Outside you can see the neighboring emergency chute apparently unusable. All got away saf