Ozone is a gas that is found in the Earth's upper atmosphere. It is made up of three oxygen atoms (O3). Ozone protects us from the sun's ultraviolet (UV) rays.
Without ozone, UV rays would reach the ground and cause health problems, such as skin cancer. Ozone also helps to keep our climate stable.
Ozone is made naturally in the Earth's atmosphere. But human activity, such as the burning of fossil fuels, can release chemicals that damage ozone. This is called ozone depletion.
Ozone depletion is a serious problem because it leaves us more vulnerable to UV rays. That's why it's important to protect the ozone layer.
Ozone pollution and depletion is a major environmental issues, and efforts are being made to reduce them.