Glossary
Partial-word, boolean (AND, OR, NOT) and "exact phrase" searches are supported.
| Term | Definition |
|---|---|
| Greenhouse gas (GHG) | A gas that absorbs and re-emits heat in the atmosphere, contributing to the greenhouse effect. The main ones are water vapor, carbon dioxide, methane, nitrous oxide, ozone, and fluorinated gases. Climate Change |
| Greenwashing | Misleading claims that a product, company or policy is more environmentally friendly than it is. Climate Change |
| Grounding | Grounding, also called retrieval-augmented generation. Instead of answering from memory, the model first retrieves documents, such as search results or a trusted database, and is instructed to answer only from them. Artificial Intelligence |
| Guardrails | Guardrails are safety filters and policies that block or modify unsafe or undesired AI model outputs. Artificial Intelligence |
| Guillain-Barre syndrome | A rare disorder in which the immune system attacks the nerves, causing weakness. A very small increased risk has been linked to some vaccines, but infections such as flu carry a higher risk. Vaccines |
| Guilt by association | Discrediting a claim or person because of an association with someone or something disliked. Science Literacy |
| Habitat | The natural environment where an organism lives. Science General |
| Haemophilus influenzae type b (Hib) | A bacterium that once caused serious childhood infections including meningitis. The Hib conjugate vaccine has nearly eliminated these infections in countries that use it. Vaccines |
| Half-life | The time it takes for half of the atoms in a sample of a radioactive substance to decay. It is the basis of radiometric dating. Science General |
| Hallucination | A hallucination is a confident but false statement generated by an AI model; for example, the idea that glue is a useful pizza ingredient. Hallucinations occur when the model completes a pattern without verifying its accuracy. Artificial Intelligence |