poor air quality is not unique to the uk or europe. more than 90% of people around the world breathe dangerous levels of air pollution, according to the . tusk made his remarks about the u.s. president's reliability before he chaired a meeting in bulgaria of the 28 leaders whose countries make up the world's biggest trading bloc. .: "evidence for decreased calcitonin gene-related peptide (cgrp) receptors and compromised responsiveness to cgrp of fetoplacental vessels in preeclamptic pregnancies." .
a sign at a planned parenthood clinic is pictured in oklahoma city, in 2015. .