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The Open University (OU) lists over 900 free short courses in 8 categories. In the Science category you can look at Babylonian Mathematics, Chemical in drinking water, antibiotic resistance, Toys & engineering materials, working on your own in mathematics, telescopes and spectrographs to name but a few. Or you could learn/ brush up a new language in the language section Something to do in theses Covid times for all ?? https://www.open.edu/openlearn/free-courses/full-catalogue

No one has ever turned into their cousin, or given birth to their nephew, so therefore no one is related to their cousins, nieces or nephews /s. If an organism spontaneously evolved into a distantly related species (fish into amphibians, flies into elephants, etc) our current understanding of evolution would be proven drastically wrong. The assumption of evolutionary theory is SHARED ANCESTRY. I.e. in the above example, that you and your cousin share the same grandparents, not that you can turn into each other or swap lineages. The evidence for shared ancestry is pretty darn strong - as an example, you share approximately 50% of your genes with a banana. That means you share metabolic pathways, cellular structures, developmental pathways, and many other life history traits that all strongly suggest that you share a distant ancestor.

I just caught part of a TV program called Spy in the Wild. BBC1 1735 - 1835 today. I will have to complete it on iplayer /catch up. It shows the most amazingly realistic robotic artificial animals designd to fool real animal herds in the wild in order to video the. These robots look like the real thing, orangutangs, crocs, egrets, penguins, sea otters etc and have sound vision and realistic action. These are unprecedented scientific tools but watching them made me wonder the title question How soon before we can make a Terminator ? They are so nearly there. Watch the programme if you get a chance.

I believe Boston Dynamics already has

Physics is the human understanding of the mathematical models and how they relate to observations and measurements.

We are HOW we eat. HOW we eat includes all kinds of things, such as WHAT we eat, how MUCH we eat, what COMBINATIONS of foods we eat, how OFTEN we eat, how much WATER we drink, how much we EXERCISE, our HEREDITY, ETC ETC.... Gregory Isaacs passed away in 2010 at the age of 59. Sing on cool ruler! We "wanna go home."

I would just prepare them shortly before you require them.

I am not entirely sure if it is really helpful, as most biological materials stored in a solvent will basically just look like the solvent (with a number of exceptions, I am sure, especially if they can be dyed). However, most are not stable for very long at room temperature and especially if some follow-up is intended they generally need to be froze. Some are amenable to freeze drying, but phospholipids tend to degrade during that process. But then it is not that you would be able to tell by looking at the sample.

If fire can only be initiated by an earlier fire, how did the first fire start?