SETI scientists suggest that extraterrestrial civilizations could detect Earth through 'technosignatures' like planetary radar and atmospheric emissions. These indicators of human technology and ...

There are over 7 billion people living on the earth right now. Tens of millions are born and die each year. Every single one of us leaves signs of our existence in the air, water, soil -- even space.

"Humans are the only example we know of, and our industrial civilization has lasted (so ... of the time that complex life has existed on the Earth's land surface." "This short time period raises ...

“Life will likely persist on Earth for another billion years, so I pondered which species might take our place, building the first non-human civilization,” he told The European. Despite the ...

NASA has plans to launch the first deep space station for humans to live long-term. Is it a necessary step to Mars?

The study is the first to analyze a wide range of Earth's current technosignatures ... Finally, getting closer and closer to Earth, an advanced civilization would detect more and more human-made ...

Possibly the first tools ever used on Earth, created by ancient hominins who were not direct ancestors of humans. Credit: CBS News/Science Journal Lead archaeologist Tom Plummer called the Oldowan ...

“Folks who love space are the luckiest people on Earth,” Zacny ... foundation for human civilization on Mars, with the near-term goal of fostering the Red Planet’s first cosmopolis, of ...