Hot USA Reddit topics:

• The secret that aluminum cans are hiding
• DC & VA schools are adding 'traffic gardens' to their playgrounds so that kids as young as 4 years old can learn the rules of the road in mini streetscapes. It's one of the District's creative initiatives to reach zero traffic fatalities by 2024:
• Study: Better Transit Helps Latinos Live Healthier Lives, A new study shows the challenges Latinos have getting to work thanks to a lack of transit