Tag Archives: meteors

On the Zanclean Flood and other extinction threats


The world is full of extreme events that can wipe us out. Case in point, this: When the Mediterranean Sea Dried Up. If you are not familiar with the story….

About 5.9 million years ago, due to a combination of tectonic movements and changes in climate, the Mediterranean Sea mostly dried up for over 600,000 years. The Messinian salinity crisis may have raised global sea levels by as much as 33 feet and decreased the salinity of the world’s oceans, raising the freezing point. And then, much more suddenly, it was refilled in less than two years in the Zanclean Flood.

The Zanclean Flood, like the Chicxulub meteor that killed off the dinosaurs, are two reminders that the planet we live on can be subjected to extreme events that can kill off many of us without really harming the planet itself. have no doubt that this is going to be true of global warming as well. Perhaps even a nuclear war. We can be removed and the planet will continue to operate without us.

The world is more hostile to us than we let in. We are only making it worse with dangers such as nuclear weaponry and climate change. We need to be striving to increase our chances of survival, not decrease them. There are enough forces in the universe that can destroy us.

(Image By Paubahi – Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=20096173)

On stopping the next Chelyabinsk Meteor

If you think of meteors hitting the Earth, you might be thinking of ones like the Chicxulub impactor that killed off the dinosaurs. Good news: scientists have been tracking meteors of that size and we are safe for at least the next few centuries.

But what about smaller ones, like the one that hit Chelyabinsk and caused significant damage? Those we may not be so safe from. Indeed, if they hit a major city, the destruction could be catastrophic.

That’s why NASA has launched the DART mission. It’s goal is to see if it could stop an asteroid and prevent an asteroid apocalypse. That piece in Scientific American on what is involved is fascinating. It’s not merely a matter of putting a major explosive on an asteroid and blowing it to bits. Go read the article and you’ll see what I mean.

For more on the. Chelyabinsk Meteor, click here.