Ahmedabad: On Thursday, many children participated in World Environment Day events at the Centre for Environment Education (CEE), and celebrated this year’s theme, ‘Together, we can beat plastic pollution’ by pledging to prevent the use of plastics. Activities included a treasure hunt, nature games and exploring traditional crafts through puppetry and pottery workshops. A movie on plastic pollution was also screened.A pledge board was placed on the Science City premises which participants signed and also participated in a workshop to make bags using recycled material. Several schools, colleges and organisations in the city held tree planting drives to mark the day. Cycle rallies on this year’s theme were also organised. tnn