The Securities and Exchange Commission is said to be scrapping plans to require that public companies disclose carbon emissions from their supply chains and end users as part of its long-awaited disclosure rules.
Why it matters: Scope 3 emissions, as they're called, are often the largest source of carbon emissions for companies, and especially in the fossil fuel industry.
The arrival of electric planes that can carry hundreds of people thousands of miles hinges on developing a new generation of batteries, motors and other technologies beyond what's powering today's electric cars.
Why it matters: Electric planes lead to cleaner flying, but plenty of R&D work remains before takeoff.
