If we were to care about every person suffering on this planet, life would shut down. — David Shore Copy Share Image
If this is the only planet on which not only life, but intelligent life, has arisen, that would be very unusual. — Seth Shostak Copy Share Image
“Planet Earth. Our home. Our world. What makes Earth so special? We are the only known planet to have life!” — Alexander G. Michaels Copy Share Image
The ocean is our planet's life support system, yet in my travels and at home, I've seen its degradation firsthand. — Greg MacGillivray Copy Share Image
If our solar system is not unusual, then there are so many planets in the universe that, for example, they outnumber the… — Neil deGrasse Tyson Copy Share Image
It drives me crazy to see so much of this planet's life so casually endangered. The first steps are so easy (drive… — Bill McKibben Copy Share Image
The bottom line is, like, one in five stars has at least one planet where life might spring up. That's a fantastically… — Seth Shostak Copy Share Image
“If the rocky ejecta from an impact hails from a planet with life, then microscopic fauna could have stowed away in the… — Neil deGrasse Tyson Copy Share Image
