באפריל 2021 כתבתי כאן על ניסוי קיצוני שעורר התנגדויות ובוטל מעט לפני צאתו לדרך. צוות חוקרים…

רקפת תבור | 9 בנובמבר 2022 | מחשבות | 5 דק׳

הניסוי המסוכן בעולם חוזר, הפעם עם גב ממשלתי

באפריל 2021 כתבתי כאן על ניסוי קיצוני שעורר התנגדויות ובוטל מעט לפני צאתו לדרך. צוות חוקרים מאוניברסיטת הרווארד שבארה"ב בהובלת פרופ' דיוויד קית' מבית הספר להנדסה ולמדע יישומי, ובמימונו הנדיב של ביל גייטס, החליט לראשונה בהיסטוריה לנסות למסך את אור השמש הנכנס לאטמוספירה שלנו ותורם להתחממות האקלים.

תחום "הנדסת האקלים" (Geoengineering) שמנסה פרופ' קית' לבחון, אמור לפזר מולקולות גופרית דו חמצנית באטמוספירה, כדי שאלה יגרמו לאטמוספירה להחזיר לחלל חלק מאור השמש וליצור הפחתה מסוימת בטמפרטורות.

מדוע דווקא גופרית דו חמצנית? החוקרים הבחינו שהתפרצויות געשיות עוצמתיות שהתרחשו לאורך ההיסטוריה ופלטו כמויות גדולות של גופרית דו חמצנית הובילו לצינון הטמפרטורה. הר הגעש פינטובו שבפיליפינים, למשל, התפרץ ביוני 1991 ופלט כ-20 מיליון טון של גופרית דו חמצנית שגרמה בחודשים העוקבים לירידה של כחצי מעלת צלזיוס בטמפרטורה הממוצעת בחצי הכדור הצפוני.

רוצה לקרוא עוד?

להמשך קריאה הירשמו או התחברו

Shutterstock

קרדיט: מגזין אפוק

בזכות האמון שהפגין נחשון בן עמינדב במשה ובאלוהים, הים נבקע ובני ישראל יצאו לחירות. לולא אותו רגע של אמונה, ייתכן שגורלנו היה שונה

המגפה החברתית השקטה של זמננו | דעה

ד"ר משה רט

מה שבאמת דחף את נמסיס להשלים את השינוי ולהפוך לגיבור היה אמונתו התמימה של סם בכך שהוא כזה מלכתחילה

אפקט פיגמליון וגיבורי-על: כשאמונה יוצרת גבורה

ד"ר משה רט

מחנה פליטים בג׳באליה

הצעד הראשון ליישום תוכנית ההגירה של טראמפ | דעה

יוני בן מנחם

אילוסטרציה: מגזין אפוק

אף אחד אחר לא אחראי על המעשים שלנו | דעה

ד"ר משה רט

צילום: Shutterstock

איום בגובה נמוך: מי עומד מאחורי הרחפנים הבלתי מזוהים מעל הבסיסים האמריקניים בארה"ב ובאירופה?

אורן שלום

צמצום הכנסות המט"ח יגרום להיחלשות המטבע שיגרום לשורה של בעיות כלכליות

כיצד אמור להתמוטט המשטר האיראני? | פרשנות

איל לוינטר

הירשמו לניוזלטר שלנו וקבלו תוכן חדש למייל מדי חודש

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