Historical clue formulations

• Wrestling move named after a pesticide — 2026-06-14
• Once-common pesticide banned in 1972 — 2025-11-26
• E.P.A.-banned pesticide — 2025-08-04
• Toxic insecticide — 2025-01-29
• Substance banned for agricultural use in 1972, for short — 2023-07-23
• Banned antimalarial — 2022-10-06
• Banned insecticide — 2022-08-14
• Banned compound once used to control malaria — 2022-07-08
• Subj. of Rachel Carson's "Silent Spring" — 2022-01-29
• Noted organochloride, in brief — 2021-11-06
• E.P.A.-banned pesticide — 2021-07-22
• Banned pesticide, for short — 2021-05-31
• Target of a 1972 ban — 2020-12-18
• Insecticide whose 1972 ban led to the comeback of the bald eagle — 2020-05-19
• E.P.A.-banned pesticide — 2020-01-15
• Banned insecticide — 2019-12-16
• Substance whose primary use earned its discoverer the 1948 Nobel Prize in Physiology - but is now banned — 2019-09-13
• Pesticide banned in 1972 — 2019-03-24
• Banned insecticide — 2019-02-13
• Pesticide banned in the '70s — 2017-05-17
• Banned insecticide — 2017-04-02
• Target of a 1972 ban — 2017-03-12
• "Silent Spring" subject — 2016-07-24
• "Silent Spring" spray — 2016-01-10
• Chemical used to fight malaria — 2015-12-20
• E.P.A.-banned pesticide — 2015-09-30
• Pesticide banned in 1972 — 2015-09-22
• Banned insecticide — 2015-09-07
• "Silent Spring" topic, in brief — 2015-05-28
• "Silent Spring" pesticide — 2015-03-04
• "Silent Spring" topic, for short — 2015-02-19
• Antimalarial agent — 2014-12-28
• Malaria-fighting compound during W.W. II — 2014-10-17
• Target of a 1972 ban — 2014-04-11
• "Silent Spring" topic — 2013-07-27
• E.P.A.-banned substance — 2013-04-17
• Banned insecticide — 2012-12-24
• Insecticide whose spelled-out name has 31 letters — 2012-05-22
• Subj. of the 1948 Nobel in Physiology or Medicine — 2012-01-04
• Target of a 1972 ban in the U.S. — 2011-06-04
• Banned insecticide, for short — 2010-12-27
• It's been banned in the U.S. since 1972 — 2010-11-26
• Banned bug spray — 2010-03-17
• "Silent Spring" subj. — 2009-09-25
• Banned insecticide — 2009-09-13
• Toxic spray — 2009-07-19
• Banned bug spray — 2009-06-22
• "Silent Spring" subject — 2009-03-13
• Banned pesticide — 2008-10-16
• Banned insecticide — 2008-03-03