This style of thread is not commonly used in metal fasteners because it requires machining the threads, which is much more costly than the rolling procedure described above. However, plastic threads ...
Many nations hope to reduce the half a billion tons of plastic made each year. But pushback from plastic and oil producers, and Donald Trump’s election, could scuttle an agreement. By Hiroko ...
Policies aimed at curbing the use of single-use plastic bags have sometimes accomplished the opposite of their intentions, a new study has found. When two Texas cities prohibited stores from ...