Earth’s horizon provides the illusion of infinity because as you travel towards it, you do not seem to get closer. But this illusion is also evidence that Earth is finite: keep traveling further, and you return to the place you started.

Despite photos of Earth from space, the classroom globe, and long-distance aviation that can cover a third of the Earth’s circumference, people continue to live as if Earth were infinite.

Sure, resources are finite, but if you consider mining asteroids and colonizing Mars, there are no limits, say the technonauts.

Santa Cruz del Islote, one of the most densely populated islands in the world, is extremely vulnerable to climate change. 
Source: The Guardian

Space probes made of titanium, carbon, and silicon do well in space. Voyager 1 and 2, launched in 1977, are still operational, and you can check their distance from Earth on NASA’s mission website.

But life in space sucks. 

Anyone living on Mars would spend almost their entire time underground to avoid radiation. And for space mining? Let’s call it hypothetical.

Back on Earth, our demand for resources keeps growing: More people and more stuff. Meanwhile, the relentless release of carbon dioxide into the atmosphere melts landlocked ice and drowns low-lying islands and coasts. The Caribbean island of Santa Cruz del Islote on the coast of Columbia, which is about to be swallowed by the rising sea, demonstrates both the finiteness of Earth’s land and its atmosphere.

This is Earth. It is a fantastic place.

Why drink recycled water on Mars and chip away on asteroid rock when you can have a Refajo under the umbrella with your feet in the water?