- NASA
- natural attitude
- natural experiment
- natural killer cells act as sentinels
- natural killer cells can be placated
- natural killer cells know about stress
- natural killer cells plan their killings
- natural kinds
- natural theology
- naturalistic research
- nature can show concern
- Nature contrives to outwit us
- nature does not waste energy
- nature has a fecund womb
- nature has great laboratories
- nature is a pregnant mine
- nature is lazy
- nature planned for seed burs to become attached to passing animals
- nature will look at the forces, configurations and energies
- nearly all of the human genome is junk DNA that is inert
- negative analogy
- nerves can speak loudly or stop talking
- nervous system as a telephone switchboard
- nervous system is a puppet-master
- neurodiversity
- neurone is like an automatic ballot machine
- neurones speak to each other
- neurotransmitters carry messages within the brain
- neutral questions
- neutral zone insinuates itself
- neutralisation leads to neutral products
- neutrinos are very shy
- neutron star resides in stellar graveyard
- neutrons do not like to be compressed
- news of vaccine spread like a virus
- Newton, Isaac
- Newton was a detective
- Newton's theory of light was like a punch-drunk boxer
- Newton's universe should be an island
- noble gases have the highest ionisation enthalpies because their atoms have full shells
- nomothetic
- novelty effect
- nuclear fission is like cellular fission
- nucleic acids act as genetic moulds
- nucleus discards neutrons to stave off fission
- nucleus is like the brain of the cell
- nucleus will twist while trying to hold onto its protons
- null hypothesis
- null learning impediment
- nuts contain thousands of shoeboxes
- nylon molecules are like strands in a rope