A global climate change summit ended with 120 countries committing to cut greenhouse gas emissions by 55% by 2030

A photographer hosted an exhibition of black-and-white photos of the city’s historic downtownA hotel renovated its rooms to include bamboo toiletries and recycled fiber linens

A musician performed a free concert in the park that drew 600+ attendeesA construction company finished building a new elementary school with 18 classroomsA study found that eating a handful of walnuts daily can improve brain function

A small business owner expanded their pet store to include a self-serve dog wash stationA city launched a bike-sharing program with 250 bicycles at 20 stations

A scientist discovered a new species of butterfly in a nearby nature reserve

A pet store started offering monthly wellness checks for dogs and cats at a discounted rateThe railway service added more trains during rush hour to reduce overcrowding

A new movie was praised by critics for its realistic portrayal of a historical eventA study revealed that drinking chamomile tea can help people sleep better

A city banned plastic bags in all retail storesAn airline announced it would use more biofuel to power its planes

(责任编辑：Tech How-Tos)