The troposphere is the layer of the Earth’s atmosphere close to the surface in which we live. Your gift of $25 can support a meal of a delegate in Bonn, Germany in November 2017.

The stratosphere contains much of the atmosphere’s ozone, which absorbs ultraviolet (UV) radiation. Your gift of $50 can support two meals of a delegate in Bonn, Germany in November 2017.

Existing between the stratosphere and the thermosphere, the mesosphere is 50 to 80 km in altitude above the Earth’s surface. Your gift of $100 can support one night’s lodging for a delegate in Bonn, Germany in November 2017.

The thermosphere is higher in temperature than underlying layers of the atmosphere, as it absorbs X-ray radiation from the sun. Your gift of $250 can support two night’s lodging and two meals for a delegate in Bonn, Germany in November 2017.

The ionosphere overlaps with the thermosphere, beginning 80 km above the Earth, reflecting and absorbing radio waves. Your gift of $500 can support five night’s lodging for a delegate in Bonn, Germany in November 2017.

The exosphere begins 500 km above the Earth’s surface, containing mostly hydrogen and oxygen atoms. Your gift of $1,000 can support a delegate’s full week of meals and lodging in Bonn, Germany in November 2017.

You have achieved the necessary escape velocity to leave the Earth’s atmosphere and blast off into outer space! With your donation of $3,000, you can fully sponsor a student delegate, faculty member, or researcher to attend the next COP meeting, including airline flight, in Bonn, Germany in November 2017.