The Earth's magnetic field disappeared 60 million years ago.

On the southern hemisphere, people and animals began to migrate towards the poles, just like polar animals migrated towards the equator.<br><br>Over time, many people built their cities on the north pole. The north pole became a large desert, with sandstorms all year round. This caused many problems for people living there. People wore special glasses to protect themselves from the sun's rays. They used umbrellas that looked like a cross between a parasol and a parasol with a mesh. People wore protective clothing to prevent their skin from burning. They built shelters that could withstand the sandstorms. They used special goggles that had polarized lenses to reduce the glare from the sand. People built artificial clouds, called cloud generators, to reduce the temperature and sandstorms. They used drones to create artificial rain, which they called rainmakers. They used special machines to purify the air and make it breathable. They built a network of tunnels and underground shelters to protect themselves from the sandstorms.<br><br>On the equator, there were many rainforests. The rainforests became much drier, causing many trees to die and forests to disappear. This caused a lot of problems for the animals that lived there. Many animals had to migrate to new places to find food and water. Some animals adapted to the new climate and survived. People built rainforests to replace the ones that had disappeared. They built water towers to provide water to the plants. They used special machines to make it rain. They built artificial lakes and rivers. They used special machines to keep the plants healthy. They built a network of tunnels and underground shelters to protect the plants from drought.<br><br>Over time, people adapted to the new climate. They built new technologies to protect themselves and their cities. They built new cities on the poles and rainforests. They built artificial clouds and rainforests to replace the natural ones. They built a network of tunnels and underground shelters to protect themselves from the sandstorms and droughts.<br><br>60 million years ago, the Earth's magnetic field disappeared. The magnetic field is like a shield that protects us from harmful radiation from space. Without it, we are exposed to harmful radiation. Over time, people built a network of satellites that orbited the Earth. These satellites acted as a shield, protecting us from harmful radiation. They used special technologies to block harmful radiation. They used special machines to absorb harmful radiation. They used special machines to convert harmful radiation into harmless radiation. They built artificial magnetic fields around cities and countries. They used special machines to create artificial magnetic fields. They used special machines to control the artificial magnetic fields. They built a network of underground tunnels and shelters to protect themselves from harmful radiation.<br><br>People also built technologies to protect themselves from harmful radiation. They wore special suits that had special materials that blocked harmful radiation. They used special machines that absorbed harmful radiation. They used special machines that converted harmful radiation into harmless radiation. They used special goggles that had special lenses that blocked harmful radiation. They used special umbrellas that had special materials that blocked harmful radiation.<br><br>Over time, people adapted to the new climate. They built new technologies to protect themselves and their cities. They built new cities on the poles and rainforests. They built artificial clouds and rainforests to replace the natural ones. They built a network of tunnels and underground shelters to protect themselves from the sandstorms and droughts. They built a network of satellites that orbited the Earth. These satellites acted as a shield, protecting us from harmful radiation. They used special technologies to block harmful radiation. They used special machines to absorb harmful radiation. They used special machines to convert harmful radiation into harmless radiation. They built artificial magnetic fields around cities and countries. They used special machines to create artificial magnetic fields. They used special machines to control the artificial magnetic fields. They built a network of underground tunnels and shelters to protect themselves from harmful radiation.