▁He ▁has ▁published ▁on ▁develop ments ▁in ▁teaching ▁for ▁social ▁justice . ▁ ▁References ▁▁ ▁Category : L iving ▁people ▁Category : Year ▁of ▁birth ▁missing ▁( l iving ▁people ) ▁Category : Place ▁of ▁birth ▁missing ▁( l iving ▁people ) ▁Category : More house ▁College ▁fac ulty ▁Category : Univers ity ▁of ▁North ▁Carolina ▁at ▁Chap el ▁Hill ▁al umn i ▁Category : New ▁York ▁University ▁fac ulty ▁Category : T each ers ▁College , ▁Columbia ▁University ▁al umn i ▁Category : Math emat icians ▁from ▁North ▁Carolina <0x0A> </s> ▁Air bor ne ▁radio activity ▁was ▁detected ▁in ▁Europe ▁in ▁aut umn ▁ 2 0 1 7 , ▁starting ▁from ▁the ▁last ▁days ▁of ▁September . ▁The ▁source ▁is ▁widely ▁sus pected ▁to ▁be ▁in ▁Russia ; ▁ ▁the ▁Russian ▁government , ▁however , ▁den ies ▁that ▁any ▁nuclear ▁m ish aps ▁occurred ▁that ▁could ▁have ▁caused ▁the ▁radiation ▁sp ike . ▁The ▁radio active ▁is ot ope ▁detected ▁was ▁r uth enium - 1 0 6 ; ▁across ▁Europe , ▁it ▁was ▁found ▁to ▁be ▁in ▁small ▁quantities ▁( from ▁micro bec quer els ▁to ▁a ▁few ▁mill ib ec quer els ▁per ▁cub ic ▁met re ▁of ▁air ), ▁not ▁significant ▁for ▁the ▁health ▁of ▁the ▁population ▁far ▁away ▁from ▁the ▁source . ▁It ▁is ▁estimated , ▁however , ▁that ▁the ▁radiation ▁released ▁pos ed ▁a ▁danger ▁to ▁any ▁employees ▁or ▁residents ▁within ▁several ▁kilom eters ▁of ▁the ▁currently ▁unknown ▁source . ▁ ▁Radio activity ▁detected ▁ ▁European ▁monitoring