As the internal air is warmed it expands and pushes out the dint.
The hot water heats the air inside the ball, which expands and forces the dent to pop out.
If any of the seals of the can has been damaged, air and/or bacteria could have gotten into the food. Low acid canned foods are protected because of being packaged and cooked in a hermetically sealed container. Once the seal is broken, bacteria could grow in the food.
There is no evidence that global warming is a myth. There has certainly been a lot of misinformation on the subject, often from vested interests, but the clear consensus of climate scientists is that global warming is real and that human activities are substantially the cause of global warming since the Industrial Revolution.
World Global Warming Day is not an officially recognized global event, but Earth Day on April 22 is often used as an opportunity to raise awareness about climate change and global warming.
It is normal to be at least a little skeptical of global warming. The biggest reason for this is that it is hard to appreciate what is often times a very slight increase in yearly temperature.
Scientists don't think tornadoes affect global warming. There are some studies to suggest the other way round, that global warming and climate change may lead to weather events like tornadoes, more often and more violent.
Scientists who write about global warming often fear that their warnings will not be taken seriously, that their research may be misrepresented or misunderstood by the public or policymakers, and that the consequences of climate change will continue to escalate without sufficient action being taken.
When a tin can is dented and the tin layer cracks, the underlying steel is exposed to the air. This can lead to oxidation of the steel, which forms rust. The reaction between the steel and oxygen in the air causes corrosion, weakening the can and reducing its ability to protect the contents inside.
There isn't one, but there is one for the carbon footprint
Global warming is causing climate change, which may mean that weather events like storms and hurricanes, droughts and heat waves, come around more often and more severely.
A warming room in a home is a space typically close to a kitchen where food can be kept warm before serving. It often features built-in cabinets or drawers with heating elements to maintain food temperature. Warming rooms were more common in older homes and mansions, but are less commonly found in modern homes.
Yes, glaciers are melting more rapidly and icebergs a falling more often into the sea.