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What are twenty-five inventions used today which did not exist one hundred years ago?
There are countless examples of inventions taken for granted today that did not exist 100 years ago. One of the most used is the Internet, developed in the 1990's in the form familiar to users today.
What was the first invention by man?
The first invention by "man" was actually created by our ancestors, either Australopithecus, H. habilis, or H. ergaster. It was probably a wooden scraper or wooden chopping device that was first used more than 2.6 million years ago. However, wooden tools decay over time, so none exist for archaeologists to examine. The oldest inventions which we have clear evidence of are Oldowan stone tools from East Africa dated to approximately 2.6 million years ago. Although both controlled fire and the wheel are often cited as the earliest inventions, the first evidence of fire occurs around 400,000 years ago (although possibly as far back as 1.7 million years ago), while the wheel was not invented any earlier than 10,000 BCE.
What are the latest inventions?
There's little point in answering this, since the answer is of necessity constantly changing.There's particularly little point in answering it with a long and most likely copy-pasted list of inventions that weren't "the latest" when I was in high school thirty years ago (I'm looking at you, Jakebellotti).
Where does the energy from coal and beans come from?
The enrgey comes from plants 100's of millions of years ago
What was not invented 100 years ago?
Thousands of things. Microwave oven for instance. Jet engines televisions etc etc etc
