WASHINGTON (AP) — The natural El Nino cycle, which warps weather worldwide, is both adding to and shaped by a warming world, meteorologists said. A new study calculated that an unusual recent twist in the warming and cooling cycle that includes El Nino and its counterpart La Nina can help explain the scientific mystery of why Earth’s already rising temperature spiked to a new level over the past three years. Separately, scientists have had to update how they label El Nino and La Nina because of