AI has just revealed there are over 1.8 billion trees in the Sahara Desert

The researchers used detailed satellite imagery from NASA, and deep learning--an advanced artificial intelligence method. Normal satellite imagery is unable to identify individual trees, they remain literally invisible. Moreover, a limited interest in counting trees outside of forested areas led to the prevailing view that this particular region had almost no trees. This is the first time that anyone counted trees across a large dryland region.