An Aceh college student plants trees at a coastal area as a part of Earth Day celebrations in Banda Aceh, Indonesia, on April 22. Earth Day is celebrated annually to raise awareness and develop a sense of public responsibility pertaining to environmentally-sustainable practices in order to build and maintain a healthy, global ecosystem and maintain a viable planet for future generations. According to the Earth Day Network, this year's Earth Day theme is 'Trees for the Earth', and the organization has begun a campaign to plant 7.8 billion trees by 2020 in time for the Earth Day's 50th anniversary. (Hotli Simanjuntak/EPA)
from Big Picture
