burning question

are your ears burning

Asked of somebody who was not present but was the topic of discussion.

book burning

Any mass destruction, removal, or recalling of books, motion pictures, broadcasts, or electronic works as a form of censorship, especially motivated by religious or political objections to the material.

carbon burning

The nucleosynthesis process, in stars of greater than 8 solar mass that have exhausted their helium supply, in which carbon is converted to neon, sodium, magnesium and other elements.

ears are burning

Being the topic of discussion in another place; or sensing that this is happening.

hydrogen burning

The nucleosynthesis process, in stars of less than 1.2 solar mass, in which hydrogen is converted to helium, deuterium and some lithium.

keep the home fires burning

To maintain daily routine and provide the necessities of life in a home or community.

out of the question

Not remotely possible.

oxygen burning

The nucleosynthesis process, subsequent to carbon burning, in which neon disintegrates to oxygen which subsequently fuses to form silicon, phosphorus sulfur and other elements of atomic number up to 40.