全國高溫逼人 酷暑之下，美國正面臨一場民生與城市韌性的考驗

進入八月下旬，美國許多地區仍然被酷熱籠罩。原本以為夏季即將接近尾聲，但是高溫並沒有明顯退去，從德州、奧克拉荷馬州、路易斯安那州，一直到新墨西哥州及亞利桑那州，炙熱天氣依然持續。

美國國家氣象局指出，目前美國中南部及西南部正經歷危險、甚至可能打破紀錄的高溫。德州與奧克拉荷馬州部分地區在星期一、8月24日，氣溫可能突破華氏105度，不少地方亦已發布高溫警告。(National Weather Service⁠)

這次高溫最令人擔心的，不只是白天氣溫高，而是夜間溫度也居高不下。當夜晚無法充分降溫，人體缺少恢復的時間，老人、兒童、戶外工作者及沒有良好空調設備的家庭，所面臨的健康風險也隨之增加。

對德州居民來說，炎熱原本就是夏季生活的一部分，但是近來極端高溫持續時間之長，已經讓我們不得不重新思考：未來的城市應該如何面對更炎熱的氣候？

高溫首先考驗的是電力系統。千家萬戶同時開動冷氣，用電量快速上升，供電系統承受巨大壓力。其次是戶外工作者，包括建築工人、園藝人員、道路施工人員、送貨司機等，他們每天必須直接面對烈日，補充水分以及適當休息變得格外重要。

高溫同樣影響企業、農業、交通以及日常生活。一場極端天氣帶來的，已經不只是「今天很熱」這麼簡單，而是牽涉能源、醫療、公共安全和城市建設的整體問題。

尤其值得注意的是，美國氣候預測中心8月23日表示，目前的極端高溫可能在美國南部部分地區繼續延伸，乾旱風險也可能隨著高溫及降雨不足而增加。(National Weather Service⁠)

我們生活在休斯敦，更能深深感受到酷暑的壓力。每天從有冷氣的室內走到戶外，迎面而來的熱浪，提醒我們城市未來的發展，除了道路、建築與經濟之外，也必須考慮更多綠地、遮陽設施、節能建築、智慧電網以及對老人和弱勢家庭的照顧。

科技進步可以讓城市更加智慧，但真正的「智慧城市」，最終還是要以人的安全和生活品質為中心。

在這樣的高溫季節，我們也應該多關心身邊的人。打電話問候獨居長者，提醒家人多喝水，避免中午長時間暴露在烈日下，更不能將兒童或寵物留在停放的汽車內。

炎熱的天氣終究會過去，但極端氣候給我們的警訊不能隨之消失。

美國是一個有強大科技、資源和創新能力的國家。如何利用這些力量，讓我們的城市更加安全、節能、更有韌性，將是未來的重要課題。

面對逼人的高溫，我們不僅要學會適應，更要開始為下一代建設一個更安全、更宜居的家園。

Extreme Heat Grips the Nation

America Faces a Growing Test of Public Health and Urban Resilience

As late August arrives, much of the United States remains trapped under intense summer heat. Many people expected temperatures to begin easing as the season moves toward its end, yet extreme heat continues across Texas, Oklahoma, Louisiana, New Mexico, Arizona, and other parts of the country.

The most concerning part of this heat is not only the scorching daytime temperatures, but also the fact that many areas remain unusually warm at night. When temperatures stay high after sunset, the human body has less opportunity to recover. This creates greater risks for seniors, children, outdoor workers, and families without adequate air-conditioning.

For Texans, hot summers are nothing new. But the increasing intensity and duration of extreme heat are forcing us to consider an important question: How should our cities prepare for a hotter future?

One of the first challenges is electricity. When millions of homes and businesses turn on their air-conditioning at the same time, demand for power rises sharply and places enormous pressure on the electrical grid.

Outdoor workers face another serious challenge. Construction crews, landscapers, road workers, delivery drivers, and many others must continue working under the burning sun. Access to drinking water, shade, and regular rest breaks becomes essential to their health and safety.

Extreme heat also affects agriculture, transportation, businesses, medical services, and everyday family life. It is no longer simply a matter of saying, “Today is very hot.” Prolonged heat has become an issue involving energy, public health, infrastructure, economic productivity, and community safety.

Here in Houston, we understand the pressure of summer heat very well. Walking from an air-conditioned building into the outdoors can feel like stepping into an oven. Such conditions remind us that future city development cannot focus only on roads, buildings, and economic growth.

We also need more trees and green spaces, shaded public areas, energy-efficient buildings, reliable power systems, smart-grid technology, and stronger support for seniors and vulnerable families.

Technology can make a city smarter, but a truly smart city must ultimately place human safety and quality of life at its center.

During periods of extreme heat, community responsibility also becomes especially important. We should check on elderly neighbors who live alone, remind our families to drink enough water, avoid unnecessary outdoor activity during the hottest hours of the day, and never leave children or pets inside parked vehicles.

The heat will eventually pass, but the warning it gives us should not be forgotten.

America has tremendous technological strength, resources, and innovative capacity. The question is how we use those strengths to build communities that are safer, more energy-efficient, and better prepared for increasingly severe weather.

Facing extreme heat is not only about surviving another summer. It is about preparing today for the kind of cities and communities we want to leave to the next generation.