المساعد الشخصي الرقمي

مشاهدة النسخة كاملة : 'I got my Florida school district to convert to electric buses'


BECKHAM
02-02-2021, 12:13 PM
Holly Thorpe's science fair project measured CO2 levels around school buses and led to the change.

for more... (https://www.bbc.co.uk/news/world-us-canada-55861908)