At a workshop in Seoul, two environmental activists melt down old plastic bottle caps that thousands of volunteers known as ¡°sparrows¡± have collected in a bid to fight a tide of plastic the novel coronavirus has helped unleash.

Green activists Kim Yona and Lee Dong-I use the bottle caps to make a tube-squeezing device ¡ª something they hope consumers will find useful and be able to keep, rather than toss out after just one use.

¡°Plastic is a recyclable resource,¡± said Kim, 26. ¡°But it¡¯s way too cheap, easy to make and easily thrown away, which makes people think it¡¯s disposable.¡±

The environmentalists opened their ¡°Plastic Mill¡± in downtown Seoul in July, attracting 2,000 volunteer ¡°sparrows¡± ¡ª the name comes from a Korean expression about the bird that can¡¯t resist stopping at a mill to peck ¡ª who gathered an estimated 85,330 bottle caps in a collection drive.

Unlike bottles, the caps are usually discarded at recycling facilities as they need extra work to sort, the activists said.

The ¡°sparrows¡± get one upcycled tube-squeezer as a reward, no matter how many caps they bring in.

¡°We can¡¯t reward them for sending lots of plastic, our goal is to reduce it,¡± said Lee.

The coronavirus has led to a surge of takeaway food and drink in South Korea, as elsewhere, fueling a 14.6% increase in plastic production ¡ª to 6,800 tons in the first eight months of the year, according to environment ministry data.

¡°I¡¯ve never seen so much single-use plastic,¡± said Lee Yong-gi, a 40-year veteran of the recycling business.

¡°If we don¡¯t recycle it, it goes to landfill.¡±

But low oil prices are undermining the profitability of recycling, and not all waste that gets to facilities is actually recycled.

The recycling rate for collected waste fell to 40.6% in 2019 compared with 57.9% in 2015, according to lawmaker Lee Soo-jin, citing government data.

The activists know their project won¡¯t end the problem.

¡°Plastic Mill can¡¯t be the solution,¡± said Lee. ¡°The problem is not plastic, it¡¯s because we use it just once. We have to reduce plastic and reuse it. Upcycling is the last resort.¡±