Russia's invasion of Ukraine has resulted in financial gaps for African famine aid after Ukrainian grain and fertilizer imports were shut off; U.S. first lady Jill Biden arrived Friday in the East African nation of Kenya, where she hopes to draw attention to women’s empowerment, children’s issues and the hunger crisis that is again ravaging the Horn of Africa; And, researchers in Kenya say they've detected an invasive mosquito that can transmit malaria in different climates, threatening progress to fight the parasitic disease.