and other officials bow at the start of a news conference in the company's headquarters early Saturday. KYODO PHOTO

The Ministry of Economy, Trade and Industry announced Friday that Rinnai's RUS-5RX and RUS-51BT models have caused five cases of carbon monoxide poisoning since 2000, killing three people and sickening 12 others. Ventilation is needed for these models because they release exhaust gas into rooms.

Our Planet

Hidetaka Ishii, an official at the Chiba Municipal Government, says close coordination with private-sector operators is key for regional decarbonization efforts.
Japan’s climate heroes show potential and limits of local initiatives

Longform

A sinkhole in Yashio, which emerged in January, was triggered by a ruptured, aging sewer pipe. Authorities worry that similar sections of infrastructure across the country are also at risk of corrosion.
That sinking feeling: Japan’s aging sewers are an infrastructure time bomb