Carbon dioxide, methane and nitrous oxide are also invisible gases,

but without un-ignorable alarms in place, they’ve been allowed to cause rapid and dangerous changes to the climate, oceans and ecosystems on earth.

Here’s what that looks like for us-- the MinuteEarth team, where we live around the world.

I’m Henry, and in the dry Rocky Mountains, drought and wildfires are becoming more frequent and more dangerous,

so we’re spending far more resources to protect our businesses and homes,

and then far more days inside them each summer because the smoke is too thick to safely go outside.

I'm Kate, and those same droughts in the Rockies mean that less water makes its way down the Colorado River,

causing Lake Mead – which supplies water to mead and 20 million other people, to drop to record low levels.

I'm Ever, and here in Venezuela droughts also threaten the Guri Reservoir – and all the hydroelectric plants that depend on it, putting more than 60% of our electricity generation at risk.

I'm Emily, and in New York City, our biggest problem isn't too little water but too much:

right now, we're still recovering from Hurricane Sandy while also trying to fortify the city against the even fiercer storms and bigger storm surges of the future.

I’m Omkar, and storms are also becoming more of a problem in Mumbai, India, with larger surges from the ocean and more intense rainfall on the land,

like the record-breaking meter of rain that fell in 24 hours in 2005, destroying homes and killing more than 1,000 people.

I’m Alex, and here in Cambodia, increasingly unpredictable monsoons threaten the livelihoods of the rice farmers and fishers who make up half the population.

This year the rains were late, which damaged young plants and lowered the productivity of the rivers, contributing to a 50% smaller catch than last year.

I’m Peter, and in Minnesota, warmer weather means less snow and ice for our winter sports and tourism and threatens the very survival of our northern forests and many of their creatures.

Some of these experiences might sound familiar to you,

or perhaps you have your own story about what climate change looks like where you live.

The question is: how big will we let those impacts become?

If we’re going to act, we have to act now, to keep the effects of climate change as small as possible :

so share your perspective with your political representatives, favorite businesses, family, and friends, and get them involved.

Since these gases are invisible, we need to make ourselves as visible as possible

so that the leaders of Earth can see that we, its citizens, want our nations to agree to a legally binding limit on greenhouse gas emissions.

To make that easier, we put links in the video description to help you find your representative's contact information.

And at the very least, you can add your name to The Mega Climate Petition for a 100% Clean World.

We made this video as part of the #OursToLose campaign – please share your own climate stories with the #OursToLose hashtag.

Let’s raise the alarm about these invisible gases!