Peb muaj ntau tshaj 10 xyoo kev paub hauv cov fled no thiab cov teb chaws xa tawm rau cov teb chaws sib txawv thiab Northerica, Tebchaws Middle, Asia, Tebchaws Europe. Tag nrho peb cov khoom lag luam tsis txaus thiab zoo meej, yog txhua yam raws li kev ua kom cov khoom lag luam nruab nrab thiab yuav khoom, qhov tseeb ntawm Manuen-cov cai tau ua tau raws li cov neeg siv khoom. Vim tias ntau ntau lawm cov khoom siv, cov nqi txo qis, thiab peb lub tuam txhab ib txwm xav txog ob tog yeej, ntawm qhov xwm txheej yeej muaj kev sib tw zoo dua.