By Alexandra Banner, CNN A flesh-eating parasite that once wreaked havoc on cattle in the US has resurfaced after decades. The notorious screwworm has been detected on a handful of Texas farms, and experts say its return will likely keep beef prices elevated for grocery shoppers. Here’s what else you need to know to get up to speed and on with your day. 1⃣ Elections Voters in four states head to the polls today to choose the candidates who will …