and it's cozier r in theveninin. reporter: swsweden is blanketedy forests. loggg g stilthe momo important ecomicic stor. whicmight behy the cntry is turng to sawdust as a urcece opower. thhohope iit wililsoon fuel semiand evev airplan. swen's larst oil cpany has teamed up wiwith the largegestw mill operarator. using a process called pyrolysis, they generate oil by ating sawdwdust. pontus: wewe process wood. but pyrocell needs chemistry know-how to o create oil out o th great material. that's uncharted territory for us and a big challenge. we're expanding our own boundadaries. sÖn: it's ththe same for us, just thetherer way around.d. so i gueuess we needacach othe. reporter: in 2021,1,il will be won from sawdust here commercially for the first time. back at the torstensson's in falun, per-ove's wife is a doctor on n maternity leleave. theyey have three e childre. evenhe typical swedish meatlllls herere v vegarian and better for the envononment. the torstensnssons were coconcd about the environment long bere g gretahunbererbecame a household meme. sasara: flht