What's Happening?! (12/21)

Gary and Shannon search the web for the day's top trending stories. Here is "What's Happening?!" for Wednesday, December 21st:

• A lone gunman opens fire in a Prague university, killing 15 people and injuring 24
• Giuliani Files for Bankruptcy Protection
• Electric scooter company Bird files for bankruptcy
• Tornado warning briefly issued in Ventura County; storm triggers evac order for part of Port Hueneme