text:  A US-based think tank says China is building twice as many solar and wind plants as the rest of the world combined. The country remains the world's largest emitter of greenhouse gases, but its carbon emissions may have peaked. Taiwan says China has flown 66 warplanes near the island over a 24-hour period, a record for this year. Taiwan's President Lai Ching-de said these incursions showed that Beijing was a threat to global democracy.