This post is coming a day late. I hope that’s not a problem with the rules of the A to Z Challenge! You see, I have some foreign DNA in my body. The common cold. I was too tired to get the video and post up last night. But here it is now! For the letter D, I’m talking about DNA. How many of these facts did you know?
And here are the facts:
- DNA stands for deoxyribonucleic acid.
- A DNA molecule is made up of two bipolymer strands wrapped around each other to form a double helix.
- There are four nucleobases represented by the letters C, G, A, and T. They are cytosine, guanine, adenine, and thymine.
- Nucleobases pair up, A with T and C with G to connect the two DNA strands to form the double helix.
- Only 2% of human DNA codes protein sequences. The remaining 98% have other various functions, which would require another full video to talk about.
- The species with the largest number of chromosomes is the ciliated protozoa with 29,640,000.
- The species with the fewest number of chromosomes is the jack jumper ant with only 2. But that’s for the females. Males are haploid and have only 1, the smallest number possible.
- Humans have 46 chromosomes, but other great apes, including chimpanzees, gorillas, and orangutans, have 48.
- More than 8% of the human genome is made up of retrovirus sequences.
- There is a 4% difference in the genomes of humans and our closest relatives, chimpanzees and bonobos.
Let me know in the comments section below what you knew.
What other bird says “Canada” to you? Maybe the loon? Well, how about the Canada goose? For the letter C, I am talking about the Canada goose! Check out the video, which includes some bonus video of a v-formation I managed to catch.
And here are the facts. How many did you know?
- This large goose is native to the arctic and temperature regions of North America.
- It’s been introduced to other parts of the world, including the UK, New Zealand, Argentina, and Chile.
- They are extremely successful at adapting to human habitation, so they are a very common bird around cities and towns, now having a population of between 4 and 5 million.
- There are 7 subspecies of Canada goose.
- They range from 75 to 120 cm in length and have a wingspan of between 127 and 185 cm.
- In most bird species, sexual dimorphism is apparent in the differences between male and female bird appearance, but the male and female Canada goose are virtually identical, except for a small difference in weight. Females are smaller.
- They spend their summers throughout Canada and the northern United States, but breed in the southern US and northern Mexico.
- Canada geese eat mainly plants, but have been known to eat insects and fish. And sometimes they scavenge from garbage cans.
- They fly in a v-formation at around 1 km in altitude, but have been known to fly as high as 9 km.
- Canada geese are monogamous, mating for life. If one dies, then they can find another mate. They’re very faithful birds.
Let me know in the comments below which facts you didn’t know about or were the most surprised about.
The A to Z Challenge continues with the letter B! This time, I talk about bees. It’s springtime, so insects are now coming out. Bees are a very important part of our environment, since they pollinate flowers, and help us grow our plant crops. So, let’s take a look at the video.
Here are the facts, which I mentioned in the video.
- There are around 20,000 known species of bee.
- The smallest bees are stingless bees that are only 2 mm in length.
- The largest bees are the Wallace’s giant bee, a kind of leafcutter bee that grows to 39 mm in length.
- Although collection of honey by humans dates back 15,000 years, beekeeping didn’t begin until 4,500 years ago in ancient Egypt.
- A bee’s mouthparts are adapted to both chew and suck, having both mandibles and a proboscis.
- The explosion of flowering plants 120 million years ago did not coincide with the appearance of bees, which have been around for 100 million years ago, evolving from a type of wasp.
- A third of our food supply depends on pollinators, most of which are bees.
- Honey isn’t the only thing humans eat. In some countries, the larvae are also eaten.
- The decline in bees has been a major worry in recent years, and has been linked to various problems such as pesticides, loss of habitat, and climate change.
- It was once said that a bumblebee’s flight was impossible. We now know that the short wing strokes, rotation of the wings, and rapid wing-beats result in sufficient lift. They’re not impossible fliers anymore.
Coming up tomorrow is the letter C. It’s going to be another biological topic. Check back tomorrow!
I seemed to delayed with everything this past week. Well, here we are with some videos. And the A to Z Challenge has begun! I uploaded only one video for my main channel, but I have two for you from my science channel!
On my main channel, my regular weekly Authors Answer has continued. This time, I talked about the validity and legality of fanfiction.
Over on my science channel, I started off April with a bang. And it’s going to be a very busy month on that channel.
The first video I posted is the first of the A to Z Challenge videos, this time featuring the letter A and Alpha Centauri.
And then I made a video about what was to come in April and some changes I have in store for science news.
And that’s all for this week. Expect 6 videos a week from my science channel, and 2 or 3 from my main channel throughout April. It’ll be pretty productive!
Which videos did you enjoy? Let me know in the comments below.
Here it is! It’s the Blogging from A to Z April Challenge! Two years ago, I participated in it, and now I’m doing it again. This time, I have a science theme, and I am featuring videos.
For the first topic, we have Alpha Centauri. Check out the video below. After the video, the facts are available for you to read.
- It’s a triple star system 4.37 ly from the sun.
- Alpha Centauri A is also known as Rigil Kentaurus, while Alpha Centauri C is known as Proxima Centauri. B has no other name.
- Alpha Centauri A is a G2 yellow dwarf star similar to the sun, although 10% brighter and 23% larger.
- Alpha Centauri B is a K1 orange dwarf star 90% the mass and 14% smaller radius than the sun.
- Proxima Centauri is an M6 class red dwarf star with 0.123 solar masses.
- Proxima Centauri orbits the AB pair at a massive distance of 15,000 AU or 0.24 light years, though it’s not completely certain it is a member of the system.
- Discovered in 2012, Alpha Centauri Bb was an extrasolar planet that was found in 2015 to be an artefact of data analysis. It doesn’t exist.
- In 2016, Proxima Centauri b was announced. It’s an extrasolar planet a bit larger than the earth, but is in the star’s habitable zone. It’s likely to be tidally locked, making life difficult to take hold. It’s also likely to be one of the easiest extrasolar planets to study in the near future because of it’s proximity.
- The Alpha Centauri system is estimated to be between 4.5 and 7 billion years old, around the same age of our sun or older.
- Due to Proxima Centauri being a flare star, life may never have a chance to become established on b because the flares may strip the planet of its atmosphere.
Coming on Monday is the letter B, which will have a more biological topic. Comments are always welcome!
So, you may be wondering what happened last night. I was editing a video, but I was so tired, I went to bed. I didn’t post it! I can’t this morning, because I have to go to work in 30 minutes. But I’ll post it later. Just think, an Authors Answer video on a Sunday. Weird.
So, the main channel had a whopping 1 video, while the science channel had nothing. Why? Well, I explained on Patreon why, but I wasn’t liking the weekly science news format. I’d rather make news videos whenever I can, talking about very current news. The A to Z Challenge is coming at the end of this week, as well, so I need to concentrate on videos for that. So, let’s get on with this week’s one video!
Seems there’s a theme. I talked about why I didn’t have many videos on my main channel. I also talked about my plans. Check it out!
And that’s it! I’ll be posting the Authors Answer video later today, I already have a Star Trek Project video done and ready to edit, and I have to get started on the A to Z Challenge videos for the science channel this week. Lots to do!
Got comments? Leave them below!
My video-making continues to be a bit slow, but I’m finding I’m very busy recently, and I have less time to record videos. Plus the fact that with the science videos, editing takes about 2 hours for a short 4 minute video. This includes doing the thumbnails, but doesn’t include searching for images or writing the script. There’s probably about 5 hours of work for a short 4 minute video.
So, here are the past week’s videos. There are 3 of them. I made only 2 for my main channel and 1 for my science channel.
Starting off with my main channel, the first video I posted is my Top 5 Fantasy World video. I talked about the 5 fantasy worlds I love the most.
And then I finally posted my latest Authors Answer video, only 2 weeks late. It’s about writing child and teenage characters.
Moving on to my science channel, since I did a science video last Saturday, there wasn’t one on Monday. So, the only video of the week was the weekly science news video. This one featured some amazing pictures of Pan, Saturn’s small moon, and some political stuff about the EPA.
That’s all for this week! Let me know what you thought of the videos in the comments section below. Over the next week, there should be 2 regular science videos plus a few videos for my main channel I hope to get done, including a Star Trek one, a book review, and Authors Answer. Maybe I’ll finally get back to doing the Japan videos.