Iowans in and outside the state participated in so-called satellite caucuses for the first time in history.
Two UN-chartered planes carrying Yemenis in need of urgent medical care have left Sanaa for Jordan.
More than 30 people have been evacuated since Monday after the Saudi-led coalition eased restrictions on Sanaa airport for the first time in three years.
Al Jazeera's Natasha Ghoneim reports from Amman, Jordan, where children are among those awaiting surgery. If all goes to plan, humans will see the sun's north and south poles for the first time in history. On Sunday night, NASA and the European Space Agency launched the Atlas V rocket. The Solar Orbiter is on a 7-year mission and it will reach its primary orbit around the sun in 2022. The mission includes 22 close approaches to the sun and will get closer than Mercury is to the sun. It has a titanium heat shield that withstands temperatures up to 500°C (900°F). Two cheetah cubs have been born through in vitro fertilization and embryo transfer into a surrogate mother for the first time. This "scientific marvel" offers hope for the endangered species. During a press conference, NY Gov. Andrew Cuomo announces that the coronavirus death toll in New York has dropped "for the first time," but the significance is still unknown.