 The world is currently facing one of its greatest challenges under circumstances never seen before. How to feed a growing population under a pandemic while preserving the environment in the face of climate change. Looking at planet Earth from space, you can see the effects of climate change, such as receding glaciers, melting polar ice caps, wildfires, and extreme weather events. The Earth is our spaceship, providing us with everything we need to grow our food and live healthy lives. But climate change and extreme weather events are putting everything at risk, damaging agriculture, and threatening the livelihoods of those who grow our food, especially the most vulnerable. We can no longer think of agriculture and food security without addressing climate change. A recent UN report sounded yet another alarm. Despite a brief dip in CO2 emissions caused by the COVID-19 pandemic, the world is still heading for a global temperature rise of more than 3 degrees this century. This is far from the Paris Agreement goals I took with me to space during my last mission. I'm currently preparing for a new mission to space in 2021, but our global mission is to tackle climate change. It requires us to work together, collectively, and the Paris Agreement shows us the way. Science and innovation are absolutely critical for this challenge. They allow us to develop tools so we can observe climate change for space, assess the impacts of climate change and develop solutions for mitigation and adaptation on Earth. To defeat climate change, we need to stand together and act quickly and urgently. We cannot postpone climate action because climate change is not on hold. Now is the time to work together and turn our goals into reality.