ers ▁in ▁many ▁cities ▁using ▁variations ▁of ▁the ▁" C afé ▁Scient ifique " ▁or ▁" S cience ▁C afé " ▁name . ▁ ▁Format ▁ ▁Typ ically , ▁one ▁month ly ▁evening ▁meeting ▁is ▁organ ised ▁in ▁a ▁non - ac ade mic ▁space ▁such ▁as ▁a ▁c afé ▁or ▁bar ▁to ▁which ▁one ▁or ▁several ▁scient ists ▁are ▁invited ▁to ▁talk ▁about ▁their ▁work ▁in ▁a ▁top ical ▁or ▁even ▁controvers ial ▁area . ▁In ▁Britain , ▁most ▁c af es ▁follow ▁a ▁simple ▁format ▁in ▁which ▁the ▁speaker ▁introdu ces ▁the ▁topic , ▁typically ▁for ▁ 1 5 – 2 0 ▁minutes , ▁then ▁there ▁is ▁a ▁short ▁break , ▁followed ▁by ▁a ▁longer ▁period ▁of ▁questions ▁and ▁discussion . ▁Typ ically , ▁speak ers ▁do ▁not ▁use ▁presentation ▁software . ▁ ▁C af es ▁aim ▁to ▁eng age ▁people ▁in ▁a ▁conversation ▁about ▁the ▁issues ▁in ▁science ▁and ▁technology ▁that ▁affect ▁our ▁lives ▁and ▁promote ▁the ▁cultural ▁exam ination ▁of ▁science . ▁ ▁C af es ▁are ▁known ▁for ▁their ▁inform al ▁and ▁friendly ▁atmosphere , ▁and ▁are ▁believed ▁to ▁improve ▁the ▁image ▁of ▁scient ists ▁and ▁care ers ▁in ▁science . ▁▁ ▁In ▁Britain ▁there ▁is ▁usually ▁one ▁speaker , ▁in ▁Den mark ▁there ▁are ▁two ▁( one ▁non - s cient ist ) ▁and ▁in ▁France ▁often ▁four ▁( as ▁well ▁as ▁a ▁band ▁in ▁the ▁interval ). ▁In ▁Japan , ▁society ▁dem ands ▁more ▁respect ▁should ▁be ▁shown ▁to ▁older ▁people ▁and ▁those ▁in ▁positions ▁of