In the face of pressing environmental challenges, the nation's biggest event on eco-friendly products kicked off Thursday in Tokyo, giving everyone from elementary school kids to businesspeople an opportunity to think about what's good for future generations.

Eco-Products 2014, a three-day event underway at Tokyo Big Sight in Koto Ward, is expected to draw 175,000 attendees through Saturday. This year's theme is "Discover ideas to change the future."

The event will feature exhibitions and products from 747 organizations.