Israeli researchers invent reusable masks that kill coronavirus with heat from phone charger
Israeli researchers invent reusable masks that kill coronavirus with heat from phone charger
Hong Kong to distribute reusable masks, relax coronavirus restrictions
Hong Kong to distribute reusable masks, relax coronavirus restrictions
Hongkongers make reusable fabric masks as Covid-19 epidemic leads to shortages and sky-high prices
Hongkongers make reusable fabric masks as Covid-19 epidemic leads to shortages and sky-high prices