CAPTCHAs are those now ubiquitous challenges you encounter to prove that you’re a human and not a bot when you go to log in to many websites.
Websites and mobile apps have long been attacked by bots on a massive scale[1]. Those malicious bots[2] are programmed to automatically consume a large amount of computing resources, post spam...
Read more https://theconversation.com/captchas-the-struggle-to-tell-real-humans-from-fake-232369
Wildfire blowups[1], fire whirls, towering thunderstorms: When fires get large and hot enough, they can actually create their own weather.
In these extreme fire situations[2], firefighters’ ordinary methods to directly control the fire don’t work, and wildfires burn out of control. Firefighters have seen many of these risks in the enormous...
Wildfire blowups[1], fire whirls, towering thunderstorms: When fires get large and hot enough, they can actually create their own weather.
In these extreme fire situations[2], firefighters’ ordinary methods to directly control the fire don’t work, and wildfires burn out of control. Firefighters have seen many of these risks in the enormous...
The stars aren’t fixed and unchanging, unlike what many ancient people thought. Once in a while, a star appears where there wasn’t one before, and then it fades away in a matter of days or weeks.
The earliest record of such a “guest star,” named so by ancient Chinese astronomers, is a star that suddenly appeared in skies around...