Decades of research and speculative fiction have led to today's computerized assistants such as Apple's Siri.
Researchers say that soon it will be possible to smash photons together to create matter in the laboratory.
While most surveyed expected benefits to the majority of the public, many expressed concerns for privacy and unintended consequences.
The U.S. National Climate Assessment shows that summers are getting hotter, heat waves are lasting longer, and weather is getting more extreme.
Humans are just the latest in a long line of hominid species that have emerged in the past six million years.
Studies of brain scans of pot smokers found that the density of brain matter was increased in the pleasure centers of the brain.