Wildfires have seriously affected Napa's winemaking

Experts say 2023 was a welcome year for Napa's wine

Many vintners say Napa’s 2023 vintage was a landmark year due to plentiful rain and a lack of extreme weather events, particularly extreme heat, which can stunt grapevine photosynthesis. The graph below illustrates the town of Calistoga's relatively cooler temperatures in 2023.

A root lice infestation once destroyed over 80% of Napa's vines

In the late 1860s, an infestation of root lice nearly destroyed the global wine industry. European rootstock, now planted across multiple continents, had no natural defenses against the pests, which infected the vines (as seen below). As a result, more than 80% of Napa’s vines were destroyed by 1900. It took decades for the industry to recover.

The Gold Rush helped turn Napa into wine country

In the 1830s, the arrival of settlers carrying European rootstock grapevines to Napa kick-started the valley's wine industry. Ten years later, the Gold Rush brought scores of wine-loving Europeans and their descendants to the area. Recognizing an opportunity, Charles Krug opened the valley's first commercial winery in 1861, which produces bottles to this day.

Mexican Americans have become a part of Napa's tradition

While the Napa wine world was largely homogenous for many decades, things are beginning to change. This short video highlights Mexican American winemakers in Napa, focusing on the story of Elias Fernandez of Shafer Vineyards. Fernandez began his wine journey as a migrant grape-picker and has been making wine for over 40 years. In 2008, his vintage won Wine Spectator’s Wine of the Year.

The Judgment of Paris put Napa on the world stage

Napa wines burst onto the world stage in 1976 when a British wine merchant invited nine French wine experts for a blind tasting of French and Californian wines, meaning that the tasters would not know the origin of the wines as they sampled. Unexpectedly, Napa’s wines dominated the tasting. That tasting, called the Judgment of Paris, was the catalyst for California being taken seriously by the global wine community.

Napa's growing conditions are unique

The French term "terroir" refers to the "sense of place" that growing conditions impart on a wine. Because the Napa Valley is surrounded by mountains on three sides, the combination of cold air from the Pacific coast and warm air from inland leaves Napa's wine with a distinct terroir.

Ranking the best of Napa's wine

Want to see how different Napa vintages stack up against one another? This Wine Spectator chart covers every Napa vintage since 1991. It gives each year an overall score, has notes about the conditions that affected the harvest and production, and gives suggestions for some of their top-scoring bottles. If you’re interested in building a long-term wine collection, it also notes which vintages might be best to age.

Explore the wineries of the Napa Valley

Plan your own Napa tour with this interactive map of the hundreds of wineries, vineyards, and tasting rooms in the valley. You can sort by a variety of different factors, including whether or not the location requires reservations, types of wine available, and even dog-friendliness. Once you’ve selected your stops, the site can also optimize your route so you spend less time in the car and more time at the wineries.

Napa produces only 4% of California's wine

Despite its reputation, the Napa Valley has a modest share of its state's annual wine production. The valley's over 400 wineries produce only 4% of the state’s wine.

Napa Valley was originally inhabited by the Indigenous Wappo people

Before the wineries, Napa was home to several Indigenous tribes, collectively called the Onasatis or Wappo, who lived and hunted on the land for generations before Spanish missionaries and settlers arrived. Some of their practices, like controlled burns of the dry brush, helped shape the fertility of the land for future agriculture.

Napa was the second officially sanctioned wine-growing region in the US

In 1979, the ATF created the American Viticultural Area system. Modeled on similar European systems, it delineated wine-growing regions in the United States. Napa Valley was the second AVA established—the first was in Missouri. Now, any wine labeled with the Napa Valley AVA must source 100% of its grapes from that area.

How winemaking has changed throughout history

Winemaking is an ancient practice, and researchers continue to find evidence that this ritual came even earlier than previously estimated. This article outlines five key turning points in wine’s history, from the fermentation of fruit by our primate ancestors to today’s increasingly popular “New World” wine. Discover the fascinating scientific and cultural factors that led to wine’s changes in flavor and increased symbolic importance.

How the California wildfires are impacting wildlife

The deadly 2025 Eaton and Palisades Fires in California have devastated neighborhoods, forested canyons and chaparral—a type of shrubland. In addition to taking dozens of human lives and displacing thousands, the fires destroyed countless habitats and displaced many species. See the unfortunate effects of the flames on wildlife populations, including birds, snakes, wildcats, and fish.

Santa Barbara County features seven designated wine regions

Grapes are notoriously fickle about where they grow and cannot be cultivated just anywhere. That’s what makes the county’s seven American Viticultural Areas so unique and cool—from the Santa Ynez valley to the Los Olivos District.

The non-alcoholic wine market

A no-nonsense, stats-based exploration of the relatively new market for nonalcoholic wine. Driven by people looking to consume less or no alcohol at all, production of nonalcoholic wine has increased dramatically over the last few years. This report details the basics of nonalcoholic winemaking, as well as the current state of the market and what to expect in the future.

A third of Americans now live in wildfire risk zones

Climate change and human development into fire-prone regions have extended the wildfire season, with some areas experiencing fire conditions year-round. Extreme conditions, poor compensation, and exposure to carcinogens have complicated firefighter recruitment, further exacerbating wildfire risks.

In 1910, riots swept Champagne over unfairness in the winemaking industry

The French are well known for protesting, and their winegrowers are no exception. After years of disastrous harvests caused by bad weather, disease, and deceptive practices by large Champagne houses, smaller vintners fought back.

The use of fungi to detoxify land and water—a process known as mycoremediation—has been used to clean up natural resources affected by the 2025 California wildfires.

The use of fungi to detoxify land and water—a process known as mycoremediation—has been used to clean up natural resources affected by the 2025 California wildfires.

Canada is the largest foreign buyer of California wine

Tariffs have impacted the wine industry in Canada significantly, given that California winemakers are responsible of 80% of the country's wine supply.

How is climate change reshaping the Great Northern Wilderness?

This article focuses on how climate change is drastically altering Kluane National Park in Canada and nearby areas in Alaska. Glaciers are struggling: One large glacier is melting so fast that it has redirected a river's flow, a phenomenon that...

Poison ivy will likely become both larger and more resilient due to climate change.

Tannins contribute to a wine's composition

Tannins are compounds found in many different types of food, including grape skins. When consumed, they produce a noticeable drying effect in the mouth. Because of the difference in production methods, red wines typically have tannins while white wines do not.

What types of extreme weather can be attributed to climate change?

For decades, it was impossible to say that a specific weather event was caused, or even made worse, by climate change. But advanced research methods are changing that.

Efficiency of commercial honeybees may exacerbate population declines in native bees

Commercial beekeepers are increasingly breeding honeybees on public lands, raising concerns among environmentalists that they’ll compete with and introduce new diseases to already threatened native pollinator populations. However, native species alone are often unable to meet the pollination levels required to meet necessary crop yields.

Nitrous oxide is the third most significant greenhouse gas made by human activities

Emissions of this molecule increased 40% from 1980 to 2020, with atmospheric concentrations reaching levels higher than at any other time in the last 800,000 years, based on ice core records. Its warming potential is 273 times that of carbon dioxide over 100 years and remains in the atmosphere for more than a century, on average.

A Death Valley shrub optimizes its cells' organelles to photosynthesize in extreme heat

Examining the cellular structure of the plant under heat, scientists observed the formation of novel, cup-shaped chloroplasts and mitochondrial relocation, which shifted the plant's optimal photosynthesis temperature to 45 degrees Celsius (113 degrees Fahrenheit) as it tripled in mass over 10 days. Engineering these mechanisms in crops may help optimize them for hotter environments.

Before writing 'Walden,' transcendentalist Henry David Thoreau nearly burned down his hometown with a campfire that grew out of control.

Firework or sparkler burns, even if they cover a relatively small area of skin, can significantly affect our range of motion.

While El Niño moves warm Pacific Ocean waters east along the equator, La Niña moves them west, shifting where rainfall will become more common for months.

70 years ago today, city officials in Santa Cruz, California, banned rock 'n' roll to protect its youth from corruption after witnessing a 'provocative' concert the night before.

Indefinite cloning of some endangered species may not sustain their longevity because cloning success rates decrease as genetic mutations accumulate.

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Louisiana's 'Cancer Alley' is infamous for having some of the highest industrial pollution, toxic air emissions, and cancer risks in the US.

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A century of Billboard issues documenting the evolution of popular music.

Jimmy Carter signed a 1978 bill that legalized home brewing, a move credited with kick-starting the craft beer industry.

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Hotels in Cannes, the glamorous city on the French Riviera, hire hawks to ward off seagulls during the city's famous film festival.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.