those constituents of my community and of democracy itself. everybody is having this struggle. norah: crime in america. our exclusive reporting. the major challenges in keeping the nation safe. all crime up 25%. murder up 24%. motor vehicle theft up 107%. what s going on in our nation s capital? allergy season is here, with specialists telling cbs news it is now lasting longer, with patients experiencing more intense symptoms. norah: president biden and south korean president yoon, the official state visit and the agreement to deter north korea. is an unbreakable bond, forged in bravery, sacrifice our people. norah: good evening, and thank you for joining us on this wednesday night. we do want to begin with that severe weather that is making its way across the southern part of the country, while resident this across the mississippi river are forced to evacuate ahead of rising floodwaters. nearly 22 million americans from central texas to the flor
getting worse. so in tonight s health watch, cbs s errol barnett tells us why and he does have some advice on how to manage her symptoms. reporter: for many, spring flowers are a welcome sight, but for a growing number of the consistently congested, pollen is painful. your eyes become red and watery, constant runny nose. reporter: ryan pfister says he has been suffering from seasonal allergies his entire life. definitely it feels longer, and i suffer from longer periods of time. reporter: he s right. allergy season is getting longer. starting 20 days earlier and lasting ten days more. what differences are you seeing, as far as patients coming to you, suffering with allergies? the allergies have been unusually more severe. the most important factor that we are seeing is climate change. reporter: that s increasingly amount of policy pollen in the air by more than 20%. pfister is now receiving immunotherapy treatment in the form of weekly allergy shots, gradually relieving