Earth Day first started 50 years ago, since then it has become an international day promoting conservation and sustainability, whilst celebrating the earth's natural beauty., Earth Day takes place on 22 April and this year's theme is 'Invest in Our Planet'. It draws attention to the billions of actions being taken around the world to create a greener, more equitable future for all. Here are some of the ways you can get involved, as selected by the website EcoWatch., The length of a day is primarily controlled by the rotation of the Earth on its axis. The Earth takes approximately 24 hours to complete one full rotation, which determines the length of a day., Earth Day takes place every year on 22 April when we are encouraged to come together to work on solutions to give our planet a healthier future. Climate change is one of the biggest challenges to the health of our planet, which also impacts human health worldwide. By taking action to mitigate climate change, we can safeguard the well-being of current and future generations and preserve the , Increased internet use leads to higher carbon emissions and more electronic waste. How can technology companies harness circular design to help combat this problem?, How many earth days are in 1 Jupiter year? One Jupiter year is equivalent to about 11.86 Earth years, so it would be around 4,332 Earth days in one Jupiter year..