u/FollowingSuitable941

I came across a news article saying a team of scientists found actual proteins inside a dinosaur bone that is 66 million years old. I was confused because I always assumed fossils were just rock and that the original biological material was long gone. How can proteins survive that long without breaking down? And how do scientists know it is real and not just something that got into the bone from outside?

I was watching a documentary about mammals and it made me think about how scientists figure out what these mammals did every day. They only have bones to look at. It is really interesting to me.

I know that the size of the eye sockets might give us some ideas. I do not know if we can really trust this when it comes to mammals that lived a very long time ago.

Some things I want to know about mammals are:

* Do early mammals with big eye sockets always mean they were active at night or are there some early mammals that do not fit this rule?

* Can the bones in the ear of mammals also tell us if they were active at night or not?

* How sure are the people who study bones the paleontologists, when they make conclusions about early mammals and they only have a small part of the skull?

* Are there any early mammals that scientists had very different ideas, about?

I also want to know if this way of figuring out what early mammals did works as well for early mammals from a long time ago like early mammals from 100 million years ago or if it is easier to do for early mammals that lived just a few million years ago.

I buy on Amazon pretty regularly and these three things have made a noticeable difference in what I actually end up paying. Sharing in case it helps anyone here.

Always check for a promo code before you hit buy. I use dealseek for this; codes are verified with a timestamp so you're not wasting time on expired ones like most coupon sites. It works more often than I expected and I've saved anywhere from $5 to $20 per order depending on what I'm buying.

Use Subscribe and Save on anything you buy more than once. Even if you have zero intention of reordering, the discount applies on the first delivery. Just cancel immediately after. Amazon is counting on you forgetting, so set a reminder. I've saved a couple hundred dollars a year just from this alone.

Always check price history before buying anything. Amazon adjusts prices constantly and a lot of "sale" badges are just the item returning to its regular price after being temporarily inflated.

Amazon finally made price history public with there Rufus tool and it takes 30 seconds to check. If the price history shows it's been lower before, just wait.

Three simple habits, none of them take more than a few minutes, and together they make a real difference. Hope it helps.