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WASHINGTON (WUSA9) -- Here are five things you need to know on Tuesday, April 22:

5. Shooting near National Zoo

Two people were shot across the entrance to the National Zoo as thousands came to celebrate 'African American Day & Easter Monday'. Their injuries are said to be non-life-threatening. There are no suspects in custody and police are urging anyone who might know something to call. READ MORE.

4. Yellow Alert for showers, possible thunder

A cold front it on its way Tuesday evening. The approaching cold front will trigger showers and perhaps a thunderstorm in the afternoon and early evening. We'll clear out tonight, then turn windy and cooler on Wednesday. FORECAST.

3. Local teens OD on new drug

A new dangerous drug is making its way around Loudoun County. The drug is like LSD and has several nicknames such as 25i, Nbomb and Smiles. The drug comes in a powder form which is turned into a liquid that blotter paper can either be dipped into or sprayed. READ MORE.

2. Happy Earth Day!

The world is celebrating the 44th anniversary of Earth Day - a day to learn how we can take care of our planet. The day was created in response to an oil spill off the Santa Barbara coast in California. Smithsonian is launching an endangered tiger song project. READ MORE.

1. Lyrid meteor shower peaks

The annual Lyrid meteor shower peaks just before dawn. The shower will be visible for much of the week, though a pesky moon may wash out some of the show. Still "the Lyrids are bright, so they can withstand some moonlight, said Deborah Byrd, editor of the astronomy and science website EarthSky.org. VIDEO.

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