Vani Hari ingredient. NPR cited this as an example of fearmongering and lack of subject matter knowledge, as isinglass, derived from fish swim bladders, has been used as a natural fining agent in food and drink for centuries, and is in any case used primarily in cask ale, not vat-brewed beers, which are normally cleared by filtering. The day after she posted her petition, Anheuser-Busch and MillerCoors released ingredients in many of their products. The trade publication "Beer Marketer's Insights" called Hari's petition an "attempt of fear mongering in the name of advocacy." Hari later claimed that she was aware of the
Tradeoffs for locomotion in air and water balloons. By changing the amount of gas in these swim bladders, fish actively control their density. If they increase the amount of air in their swim bladder, their overall density will become less than the surrounding water, and increased upward buoyancy pressures will cause the fish to rise until they reach a depth at which they are again at equilibrium with the surrounding water. In this way, fish behave essentially as a hot air balloon does in air. Some seabird species utilize surface feeding or plunge diving during foraging in which gravity and/or momentum is used to counteract buoyancy effects