How long ago did our ancestors use fire?

Posted by Dave Switzer under From the web

One million years ago. New research says that the earliest firm evidence is from a cave in South Africa where fires burned more than once in the same spot. Our ancestors used fire a million years ago, study says At that point they weren’t yet using fire on a regular basis — that came around […]

Have aliens visited Earth?

Posted by Dave Switzer under From the web, My thoughts

I would be happy if aliens visited Earth, but I don’t believe they have as of yet. Although there are many reports of UFOs and alien abductions, somehow I think if aliens were really here we would know it. As the FAQ on the SETI Institute web site puts it: “if there were interesting, verifiable […]

Over 60 billion habitable worlds in our galaxy

Posted by Dave Switzer under From the web, My thoughts

That’s a new estimate from astronomers, who have calculated that 40% of red dwarf stars (the most common type of star in our galaxy) “have a so-called ‘super-Earth’ planet orbiting in a habitable zone that would allow water to flow on the surface.” More details here… Billions of habitable worlds in Milky Way And that’s […]

Why did humans start walking upright?

Posted by Dave Switzer under From the web

Why our ancestors started walking upright has been one of the big mysteries in human evolution. There have been various theories but we didn’t know for sure. Now researchers have studied chimpanzees — who are relatively similar to our ancestors from 6 million years ago — and discovered that they will walk upright more when […]

Space is a dangerous place

Posted by Dave Switzer under From the web

Something unusual happened on the International Space Station today. The astronauts all got into rockets in case they had to leave the station and return to Earth. Why? Because a piece of space junk was heading their way and they weren’t sure if it was going to hit the station. What does space junk consist […]

A few articles on climate change

Posted by Dave Switzer under From the web

97% of scientists agree that humans have contributed significantly to climate change. It’s a huge issue that we’ll have to deal with sooner or later in the 21st century — sooner would be better. There are some places in the world where people have no choice but to believe that climate change is happening — […]

What to do if you’re talking with a creationist

Posted by Dave Switzer under From the web

Has this happened to you? Someone is telling you about creationism and you’re pretty sure they’re wrong but you’re not sure exactly what to say. Here’s a YouTube video I came across that will help. Top Ten Creationist Arguments And here’s a great blog on evolution and creationism. It keeps you up to date on […]

Genome sequence of gorilla completed

Posted by Dave Switzer under From the web

The genome sequence of gorillas has just been completed. What percentage of our DNA do we share with gorillas? If you guessed 98% you’re right. How many million years ago was our last common ancestor with gorillas? If you guessed 10 you’re right. Why should you care? Well, if you don’t find this inherently fascinating, […]