Siccar Point, photographed by the Curiosity rover, is near Mars' Gale Crater. NASA/JPL-Caltech/MSSS; Processing & License: Kevin M. Gill People from cultures across the world have been looking at Mars ...

People from cultures across the world have been looking at Mars since ancient times. Because it appears reddish, it has often been called the red planet. Your blood is also red because of a mixture of ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Curious Kids is a series for children of all ages. If you have a question you’d like ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. People from cultures across the world have been ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) David Joffe, Kennesaw State University (THE CONVERSATION) Advertisement Article ...